PaperMC/patches/api/0053-Fix-upstream-javadocs.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sat, 10 Jun 2017 16:59:40 -0500
Subject: [PATCH] Fix upstream javadocs


diff --git a/src/main/java/org/bukkit/BanList.java b/src/main/java/org/bukkit/BanList.java
index ac38b4af280cc7f52c70c238a6f4f9cccab1241d..5829aca9e5aa700bd95f19db3ae032100f74d5a3 100644
--- a/src/main/java/org/bukkit/BanList.java
+++ b/src/main/java/org/bukkit/BanList.java
@@ -38,6 +38,9 @@ public interface BanList<T> {
 
     /**
      * Gets a {@link BanEntry} by target.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported and this method will return
+     * null when trying to request them. The replacement is bans by UUID.
      *
      * @param target entry parameter to search for
      * @return the corresponding entry, or null if none found
@@ -59,6 +62,9 @@ public interface BanList<T> {
     /**
      * Adds a ban to this list. If a previous ban exists, this will
      * update the previous entry.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported and this method will return
+     * null when trying to request them. The replacement is bans by UUID.
      *
      * @param target the target of the ban
      * @param reason reason for the ban, null indicates implementation default
@@ -139,6 +145,9 @@ public interface BanList<T> {
     /**
      * Gets if a {@link BanEntry} exists for the target, indicating an active
      * ban status.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported.
+     * The replacement is bans by UUID.
      *
      * @param target the target to find
      * @return true if a {@link BanEntry} exists for the target, indicating an
@@ -161,6 +170,9 @@ public interface BanList<T> {
     /**
      * Removes the specified target from this list, therefore indicating a
      * "not banned" status.
+     * <p>
+     * Bans by name for ban type {@link Type#NAME NAME} are no longer supported.
+     * The replacement is bans by UUID.
      *
      * @param target the target to remove from this list
      */
diff --git a/src/main/java/org/bukkit/Bukkit.java b/src/main/java/org/bukkit/Bukkit.java
index 29e13fd7c94c5c50e81b804e6dffc8721164f1d1..bacdb1742ecb98bb10651b0582500449bf904910 100644
--- a/src/main/java/org/bukkit/Bukkit.java
+++ b/src/main/java/org/bukkit/Bukkit.java
@@ -1538,6 +1538,8 @@ public final class Bukkit {
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
@@ -2059,7 +2061,7 @@ public final class Bukkit {
      * server will pause most functions after this time if there are no players
      * online.
      * <p>
-     * A value of less than 0 will disable the setting
+     * A value of less than 1 will disable the setting
      *
      * @param seconds the pause threshold in seconds
      */
diff --git a/src/main/java/org/bukkit/ChunkSnapshot.java b/src/main/java/org/bukkit/ChunkSnapshot.java
index 8832a2e0907299fb5f379b6938bbbc8e98688478..725d7944ce066ac56ed86b31628f00eb46cdcf64 100644
--- a/src/main/java/org/bukkit/ChunkSnapshot.java
+++ b/src/main/java/org/bukkit/ChunkSnapshot.java
@@ -136,7 +136,7 @@ public interface ChunkSnapshot {
      * Get raw biome temperature at given coordinates
      *
      * @param x X-coordinate (0-15)
-     * @param y Y-coordinate (0-15)
+     * @param y Y-coordinate (world minHeight (inclusive) - world maxHeight (exclusive))
      * @param z Z-coordinate (0-15)
      * @return temperature at given coordinate
      */
diff --git a/src/main/java/org/bukkit/HeightMap.java b/src/main/java/org/bukkit/HeightMap.java
index db6fcd635e295e561642d49941fd8e611247d38e..344b2b5d9207d2645bc5417d1ec00dd0a0b95604 100644
--- a/src/main/java/org/bukkit/HeightMap.java
+++ b/src/main/java/org/bukkit/HeightMap.java
@@ -12,8 +12,7 @@ public enum HeightMap {
      */
     MOTION_BLOCKING,
     /**
-     * The highest block that blocks motion or contains a fluid or is in the
-     * {@link Tag#LEAVES}.
+     * The highest block that blocks motion or contains a fluid, excluding leaves.
      */
     MOTION_BLOCKING_NO_LEAVES,
     /**
diff --git a/src/main/java/org/bukkit/Particle.java b/src/main/java/org/bukkit/Particle.java
index bc23886a62312fc9e222ff2c6e7a7f325397d36a..ecf9f941e618608b98feaac46df3f10ec951c186 100644
--- a/src/main/java/org/bukkit/Particle.java
+++ b/src/main/java/org/bukkit/Particle.java
@@ -207,7 +207,7 @@ public enum Particle implements Keyed {
     }
 
     /**
-     * Options which can be applied to redstone dust particles - a particle
+     * Options which can be applied to dust particles - a particle
      * color and size.
      */
     public static class DustOptions {
diff --git a/src/main/java/org/bukkit/RegionAccessor.java b/src/main/java/org/bukkit/RegionAccessor.java
index 4c9fd558fbf7f57a948fbb7f80f4651048c0fb57..458119a9ef7ce8e1f59bd47caa5b4bc698715440 100644
--- a/src/main/java/org/bukkit/RegionAccessor.java
+++ b/src/main/java/org/bukkit/RegionAccessor.java
@@ -158,7 +158,7 @@ public interface RegionAccessor {
      * Creates a tree at the given {@link Location}
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @return true if the tree was created successfully, otherwise false
      */
@@ -170,14 +170,14 @@ public interface RegionAccessor {
      * The provided consumer gets called for every block which gets changed
      * as a result of the tree generation. When the consumer gets called no
      * modifications to the world are done yet. Which means, that calling
-     * {@link #getBlockState(Location)} in the consumer while return the state
+     * {@link #getBlockState(Location)} in the consumer will return the state
      * of the block before the generation.
      * <p>
      * Modifications done to the {@link BlockState} in the consumer are respected,
      * which means that it is not necessary to call {@link BlockState#update()}
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @param stateConsumer The consumer which should get called for every block which gets changed
      * @return true if the tree was created successfully, otherwise false
@@ -197,7 +197,7 @@ public interface RegionAccessor {
      * If it returns {@code false} the block won't get set in the world.
      *
      * @param location Location to spawn the tree
-     * @param random Random to use to generated the tree
+     * @param random Random to use to generate the tree
      * @param type Type of the tree to create
      * @param statePredicate The predicate which should get used to test if a block should be set or not.
      * @return true if the tree was created successfully, otherwise false
diff --git a/src/main/java/org/bukkit/Server.java b/src/main/java/org/bukkit/Server.java
index 4225105fef7aee264b34d1687762b5fc8dccbc47..a506e618448c3bf4b56f54f8fe00d7158df29dd7 100644
--- a/src/main/java/org/bukkit/Server.java
+++ b/src/main/java/org/bukkit/Server.java
@@ -581,13 +581,10 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
      * </ul>
      * <p>
      * <b>Note:</b> If set to 0, {@link SpawnCategory} mobs spawning will be disabled.
-     * <p>
-     * Minecraft default: 1.
-     * <br>
-     * <b>Note: </b> the {@link SpawnCategory#MISC} are not consider.
      *
      * @param spawnCategory the category of spawn
      * @return the default ticks per {@link SpawnCategory} mobs spawn value
+     * @throws IllegalArgumentException if the category is {@link SpawnCategory#MISC}
      */
     public int getTicksPerSpawns(@NotNull SpawnCategory spawnCategory);
 
@@ -1298,6 +1295,8 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
 
     /**
      * Gets every player that has ever played on this server.
+     * <p>
+     * <b>This method can be expensive as it loads all the player data files from the disk.</b>
      *
      * @return an array containing all previous players
      */
@@ -1740,7 +1739,7 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
      * Sets the pause when empty threshold seconds. To save resources, the
      * pause most functions after this time if there are no players online.
      * <p>
-     * A value of less than 0 will disable the setting
+     * A value of less than 1 will disable the setting
      *
      * @param seconds the pause threshold in seconds
      */
diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
index e5d3ccf6e1bc87db1f5602214371c0e8ed4d5431..369e92f2b5e4b8fc7f5bf8a97058e827c91e4c59 100644
--- a/src/main/java/org/bukkit/World.java
+++ b/src/main/java/org/bukkit/World.java
@@ -2766,7 +2766,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link StructureType}.
      * Finding unexplored structures can, and will, block if the world is
-     * looking in chunks that gave not generated yet. This can lead to the world
+     * looking in chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
@@ -2800,7 +2800,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link StructureType}.
      * Finding unexplored structures can, and will, block if the world is
-     * looking in chunks that gave not generated yet. This can lead to the world
+     * looking in chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
@@ -2833,7 +2833,7 @@ public interface World extends RegionAccessor, WorldInfo, PluginMessageRecipient
     /**
      * Find the closest nearby structure of a given {@link Structure}. Finding
      * unexplored structures can, and will, block if the world is looking in
-     * chunks that gave not generated yet. This can lead to the world
+     * chunks that have not generated yet. This can lead to the world
      * temporarily freezing while locating an unexplored structure.
      * <p>
      * The {@code radius} is not a rigid square radius. Each structure may alter
diff --git a/src/main/java/org/bukkit/attribute/AttributeModifier.java b/src/main/java/org/bukkit/attribute/AttributeModifier.java
index ecf3897bd2dbdeebfa09a00a692724a013b0186d..b90af00a8eb83d4c1b183fbc4f1e9eae84c9074b 100644
--- a/src/main/java/org/bukkit/attribute/AttributeModifier.java
+++ b/src/main/java/org/bukkit/attribute/AttributeModifier.java
@@ -129,8 +129,7 @@ public class AttributeModifier implements ConfigurationSerializable, Keyed {
     }
 
     /**
-     * Get the {@link EquipmentSlot} this AttributeModifier is active on,
-     * or null if this modifier is applicable for any slot.
+     * Get the {@link EquipmentSlotGroup} this AttributeModifier is active on.
      *
      * @return the slot
      */
diff --git a/src/main/java/org/bukkit/block/Bed.java b/src/main/java/org/bukkit/block/Bed.java
index 20aaa7e15a71eef34ff4c06bad14464e7c9584dd..46778452893de3d8f1765994fb0c1ba62a90b315 100644
--- a/src/main/java/org/bukkit/block/Bed.java
+++ b/src/main/java/org/bukkit/block/Bed.java
@@ -4,7 +4,22 @@ import org.bukkit.material.Colorable;
 
 /**
  * Represents a captured state of a bed.
- * @deprecated does not provide useful information beyond the material itself
  */
-@Deprecated(since = "1.13")
-public interface Bed extends TileState, Colorable { }
+// Paper start
+// @Deprecated(since = "1.13")
+public interface Bed extends TileState, Colorable {
+
+    @Override
+    @org.jetbrains.annotations.NotNull org.bukkit.DyeColor getColor();
+
+    /**
+     * <b>Unsupported</b>
+     *
+     * @throws UnsupportedOperationException not supported, set the block type
+     */
+    @Override
+    @org.jetbrains.annotations.Contract("_ -> fail")
+    @Deprecated(forRemoval = true)
+    void setColor(@org.bukkit.UndefinedNullability("not supported") org.bukkit.DyeColor color);
+// Paper end
+}
diff --git a/src/main/java/org/bukkit/block/Block.java b/src/main/java/org/bukkit/block/Block.java
index ab65d9769b73780dc126b4f11f2ad4528e6ab0c0..f440da5941e11c30145175cf24162e1ba2b4e3cf 100644
--- a/src/main/java/org/bukkit/block/Block.java
+++ b/src/main/java/org/bukkit/block/Block.java
@@ -357,7 +357,7 @@ public interface Block extends Metadatable, Translatable {
      * Gets the temperature of this block.
      * <p>
      * If the raw biome temperature without adjusting for height effects is
-     * required then please use {@link World#getTemperature(int, int)}.
+     * required then please use {@link World#getTemperature(int, int, int)}.
      *
      * @return Temperature of this block
      */
@@ -405,7 +405,10 @@ public interface Block extends Metadatable, Translatable {
     boolean applyBoneMeal(@NotNull BlockFace face);
 
     /**
-     * Returns a list of items which would drop by destroying this block
+     * Returns a list of items which could drop by destroying this block.
+     * <p>
+     * The items are not guaranteed to be consistent across multiple calls to this
+     * method as this just uses the block type's loot table.
      *
      * @return a list of dropped items for this type of block
      */
@@ -413,8 +416,11 @@ public interface Block extends Metadatable, Translatable {
     Collection<ItemStack> getDrops();
 
     /**
-     * Returns a list of items which would drop by destroying this block with
-     * a specific tool
+     * Returns a list of items which could drop by destroying this block with
+     * a specific tool.
+     * <p>
+     * The items are not guaranteed to be consistent across multiple calls to this
+     * method as this just uses the block type's loot table.
      *
      * @param tool The tool or item in hand used for digging
      * @return a list of dropped items for this type of block
@@ -423,8 +429,11 @@ public interface Block extends Metadatable, Translatable {
     Collection<ItemStack> getDrops(@Nullable ItemStack tool);
 
     /**
-     * Returns a list of items which would drop by the entity destroying this
-     * block with a specific tool
+     * Returns a list of items which could drop by the entity destroying this
+     * block with a specific tool.
+     * <p>
+     * The items are not guaranteed to be consistent across multiple calls to this
+     * method as this just uses the block type's loot table.
      *
      * @param tool The tool or item in hand used for digging
      * @param entity the entity destroying the block
diff --git a/src/main/java/org/bukkit/block/data/BlockData.java b/src/main/java/org/bukkit/block/data/BlockData.java
index 29fd06cb800f9b7cc91a120ccbe2980422ed9653..cd3b3e05cc825cfedec07f9a2a1e0b7b2a8866d6 100644
--- a/src/main/java/org/bukkit/block/data/BlockData.java
+++ b/src/main/java/org/bukkit/block/data/BlockData.java
@@ -224,7 +224,7 @@ public interface BlockData extends Cloneable {
      * {@link Material#REDSTONE_WIRE} -> {@link Material#REDSTONE}
      * {@link Material#CARROTS} -> {@link Material#CARROT}
      * </pre>
-     * @return placement material
+     * @return placement material or {@link Material#AIR} if it doesn't have one
      */
     @NotNull
     Material getPlacementMaterial();
diff --git a/src/main/java/org/bukkit/block/data/FaceAttachable.java b/src/main/java/org/bukkit/block/data/FaceAttachable.java
index 9599e1237b9717ddbf84c3738bf6c1293e8b3c54..950266b4bb0a2fabeb9539c5676ed58f0b0fe620 100644
--- a/src/main/java/org/bukkit/block/data/FaceAttachable.java
+++ b/src/main/java/org/bukkit/block/data/FaceAttachable.java
@@ -38,7 +38,7 @@ public interface FaceAttachable extends BlockData {
          */
         WALL,
         /**
-         * The switch is mounted to the ceiling and pointing dowanrds.
+         * The switch is mounted to the ceiling and pointing downwards.
          */
         CEILING;
     }
diff --git a/src/main/java/org/bukkit/block/data/type/CommandBlock.java b/src/main/java/org/bukkit/block/data/type/CommandBlock.java
index 9a7122c907308e4e0a4d0eab815df16899503c19..3b1dab4c1c38477fbe651382f37fdb042ce67cd1 100644
--- a/src/main/java/org/bukkit/block/data/type/CommandBlock.java
+++ b/src/main/java/org/bukkit/block/data/type/CommandBlock.java
@@ -4,7 +4,7 @@ import org.bukkit.block.data.Directional;
 
 /**
  * 'conditional' denotes whether this command block is conditional or not, i.e.
- * will only execute if the preceeding command block also executed successfully.
+ * will only execute if the preceding command block also executed successfully.
  */
 public interface CommandBlock extends Directional {
 
diff --git a/src/main/java/org/bukkit/block/data/type/Gate.java b/src/main/java/org/bukkit/block/data/type/Gate.java
index 494f97d47b52bc99b13748c1b57730fbd37d8f51..ebc98607b93294847f95e793304bc5d2528de2a3 100644
--- a/src/main/java/org/bukkit/block/data/type/Gate.java
+++ b/src/main/java/org/bukkit/block/data/type/Gate.java
@@ -5,7 +5,7 @@ import org.bukkit.block.data.Openable;
 import org.bukkit.block.data.Powerable;
 
 /**
- * 'in_wall" indicates if the fence gate is attached to a wall, and if true the
+ * 'in_wall' indicates if the fence gate is attached to a wall, and if true the
  * texture is lowered by a small amount to blend in better.
  */
 public interface Gate extends Directional, Openable, Powerable {
diff --git a/src/main/java/org/bukkit/block/data/type/Switch.java b/src/main/java/org/bukkit/block/data/type/Switch.java
index df8c2d60e7cce0294d3a1b1a6a81367a56602c26..16ced762f498b0dadd22789fa5d121d644bebf3d 100644
--- a/src/main/java/org/bukkit/block/data/type/Switch.java
+++ b/src/main/java/org/bukkit/block/data/type/Switch.java
@@ -21,7 +21,7 @@ public interface Switch extends Directional, FaceAttachable, Powerable {
      * Sets the value of the 'face' property.
      *
      * @param face the new 'face' value
-     * @deprecated use {@link #getAttachedFace()}
+     * @deprecated use {@link #setAttachedFace(AttachedFace)}
      */
     @Deprecated(since = "1.15.2")
     void setFace(@NotNull Face face);
@@ -42,7 +42,7 @@ public interface Switch extends Directional, FaceAttachable, Powerable {
          */
         WALL,
         /**
-         * The switch is mounted to the ceiling and pointing dowanrds.
+         * The switch is mounted to the ceiling and pointing downwards.
          */
         CEILING;
     }
diff --git a/src/main/java/org/bukkit/entity/ArmorStand.java b/src/main/java/org/bukkit/entity/ArmorStand.java
index 6a1d563d1b7ea7e1060dfacfba98e4e1d4295790..c727b2d40efae8f08bdd159991afb8992568a58f 100644
--- a/src/main/java/org/bukkit/entity/ArmorStand.java
+++ b/src/main/java/org/bukkit/entity/ArmorStand.java
@@ -360,5 +360,8 @@ public interface ArmorStand extends LivingEntity {
      * @param move {@code true} if this armour stand can move, {@code false} otherwise
      */
     void setCanMove(boolean move);
+
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
     // Paper end
 }
diff --git a/src/main/java/org/bukkit/entity/Arrow.java b/src/main/java/org/bukkit/entity/Arrow.java
index a292579c9fa6eeac92fb1a21fa8144fbef307dad..38e6a8dbb248ead98cfb36bfb077d4e9e95b2c77 100644
--- a/src/main/java/org/bukkit/entity/Arrow.java
+++ b/src/main/java/org/bukkit/entity/Arrow.java
@@ -93,7 +93,7 @@ public interface Arrow extends AbstractArrow {
      * Removes a custom potion effect from this arrow.
      *
      * @param type the potion effect type to remove
-     * @return true if the an effect was removed as a result of this call
+     * @return true if the effect was removed as a result of this call
      * @throws IllegalArgumentException if this operation would leave the Arrow
      * in a state with no Custom Effects and PotionType.UNCRAFTABLE
      */
diff --git a/src/main/java/org/bukkit/entity/EnderDragon.java b/src/main/java/org/bukkit/entity/EnderDragon.java
index 1e56aef9188487d3e9c737e85025f601ab359a72..92cd35c87bad578c2b714761c93a5b72ebf4bc9e 100644
--- a/src/main/java/org/bukkit/entity/EnderDragon.java
+++ b/src/main/java/org/bukkit/entity/EnderDragon.java
@@ -30,7 +30,7 @@ public interface EnderDragon extends ComplexLivingEntity, Boss, Mob, Enemy {
          */
         FLY_TO_PORTAL,
         /**
-         * The dragon will land on on the portal. If the dragon is not near
+         * The dragon will land on the portal. If the dragon is not near
          * the portal, it will fly to it before mounting.
          */
         LAND_ON_PORTAL,
diff --git a/src/main/java/org/bukkit/entity/Entity.java b/src/main/java/org/bukkit/entity/Entity.java
index 411297f66520774a4072c9e15aa9bdf03a527208..45d408f519767785b222c409170bbfecbd8d1931 100644
--- a/src/main/java/org/bukkit/entity/Entity.java
+++ b/src/main/java/org/bukkit/entity/Entity.java
@@ -180,9 +180,13 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
     public List<org.bukkit.entity.Entity> getNearbyEntities(double x, double y, double z);
 
     /**
-     * Returns a unique id for this entity
+     * Returns the network protocol ID for this entity. This is
+     * not to be used as an identifier for the entity except in
+     * network-related operations. Use {@link #getUniqueId()} as
+     * an entity identifier instead.
      *
-     * @return Entity id
+     * @return the network protocol ID
+     * @see #getUniqueId()
      */
     public int getEntityId();
 
diff --git a/src/main/java/org/bukkit/entity/HumanEntity.java b/src/main/java/org/bukkit/entity/HumanEntity.java
index b21f42e653553b6dbd571a1e8fba1e5a04f3bbd1..c90a0a00be78200adf217e2b3a8302b59af3cf7c 100644
--- a/src/main/java/org/bukkit/entity/HumanEntity.java
+++ b/src/main/java/org/bukkit/entity/HumanEntity.java
@@ -22,6 +22,11 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface HumanEntity extends LivingEntity, AnimalTamer, InventoryHolder {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@NotNull EntityEquipment getEquipment();
+    // Paper end
+
     /**
      * Returns the name of this player
      *
diff --git a/src/main/java/org/bukkit/entity/ItemFrame.java b/src/main/java/org/bukkit/entity/ItemFrame.java
index b688b3856cb3068a539fcecfbfa113f8ab4160a9..c275b881cbd11307a6dcc7190d7a7d4063000ad8 100644
--- a/src/main/java/org/bukkit/entity/ItemFrame.java
+++ b/src/main/java/org/bukkit/entity/ItemFrame.java
@@ -75,7 +75,7 @@ public interface ItemFrame extends Hanging {
     public void setRotation(@NotNull Rotation rotation) throws IllegalArgumentException;
 
     /**
-     * Returns whether the item frame is be visible or not.
+     * Returns whether the item frame is visible or not.
      *
      * @return whether the item frame is visible or not
      */
diff --git a/src/main/java/org/bukkit/entity/LivingEntity.java b/src/main/java/org/bukkit/entity/LivingEntity.java
index 598c88f02a764abe62f9f10833b2c499a0fb00ff..4b75a5e1ce788bc375d6147422e5bee6ef0c03be 100644
--- a/src/main/java/org/bukkit/entity/LivingEntity.java
+++ b/src/main/java/org/bukkit/entity/LivingEntity.java
@@ -502,7 +502,7 @@ public interface LivingEntity extends Attributable, Damageable, ProjectileSource
     /**
      * Sets the leash on this entity to be held by the supplied entity.
      * <p>
-     * This method has no effect on EnderDragons, Withers, Players, or Bats.
+     * This method has no effect on players.
      * Non-living entities excluding leashes will not persist as leash
      * holders.
      *
diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
index f3f62e13cc1b6172808c52f2d5f520f1f584e6db..ad5dbf310fe7b34c997bb339f09697222f862005 100644
--- a/src/main/java/org/bukkit/entity/Mob.java
+++ b/src/main/java/org/bukkit/entity/Mob.java
@@ -9,6 +9,10 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface Mob extends LivingEntity, Lootable {
 
+    // Paper start
+    @Override
+    org.bukkit.inventory.@org.jetbrains.annotations.NotNull EntityEquipment getEquipment();
+    // Paper end
     /**
      * Instructs this Mob to set the specified LivingEntity as its target.
      * <p>
diff --git a/src/main/java/org/bukkit/entity/PigZombie.java b/src/main/java/org/bukkit/entity/PigZombie.java
index ae9eaaa8e38e1d9dfc459926c7fc51ddb89de84a..b2ec535bb1b0ce0c114ddd7638b90218b05cd835 100644
--- a/src/main/java/org/bukkit/entity/PigZombie.java
+++ b/src/main/java/org/bukkit/entity/PigZombie.java
@@ -44,8 +44,6 @@ public interface PigZombie extends Zombie {
 
     /**
      * <b>Not applicable to this entity</b>
-     *
-     * @return UnsuppotedOperationException
      */
     @Override
     public int getConversionTime();
diff --git a/src/main/java/org/bukkit/entity/Player.java b/src/main/java/org/bukkit/entity/Player.java
index e014582d73fc821c0b6dcf19ae1f5dfdf510343c..5b12fa8c41a18ddfe08d82c138c0f71106c89d4d 100644
--- a/src/main/java/org/bukkit/entity/Player.java
+++ b/src/main/java/org/bukkit/entity/Player.java
@@ -492,15 +492,15 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Saves the players current location, health, inventory, motion, and
-     * other information into the uuid.dat file, in the &lt;main
-     * world&gt;/playerdata folder.
+     * other information into the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      */
     public void saveData();
 
     /**
      * Loads the players current location, health, inventory, motion, and
-     * other information from the uuid.dat file, in the &lt;main
-     * world&gt;/playerdata folder.
+     * other information from the &lt;uuid&gt;.dat file, in the
+     * &lt;level-name&gt;/playerdata/ folder.
      * <p>
      * Note: This will overwrite the players current inventory, health,
      * motion, etc, with the state from the saved dat file.
@@ -861,7 +861,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
     /**
      * Plays an effect to just this player.
      *
-     * @param <T> the data based based on the type of the effect
+     * @param <T> the data based on the type of the effect
      * @param loc the location to play the effect at
      * @param effect the {@link Effect}
      * @param data a data bit needed for some effects
@@ -1272,7 +1272,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *
      * Use supplied alternative character to the section symbol to represent legacy color codes.
      *
-     * @param alternateChar Alternate symbol such as '&'
+     * @param alternateChar Alternate symbol such as '&amp;'
      * @param message The message to send
      * @deprecated use {@link #sendActionBar(net.kyori.adventure.text.Component)}
      */
@@ -1745,7 +1745,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Allows this player to see a player that was previously hidden. If
-     * another another plugin had hidden the player too, then the player will
+     * another plugin had hidden the player too, then the player will
      * remain hidden until the other plugin calls this method too.
      *
      * @param plugin Plugin that wants to show the player
@@ -1772,7 +1772,7 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
 
     /**
      * Allows this player to see an entity that was previously hidden. If
-     * another another plugin had hidden the entity too, then the entity will
+     * another plugin had hidden the entity too, then the entity will
      * remain hidden until the other plugin calls this method too.
      *
      * @param plugin Plugin that wants to show the entity
@@ -1855,9 +1855,6 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *     case this method will have no affect on them. Use the
      *     {@link PlayerResourcePackStatusEvent} to figure out whether or not
      *     the player loaded the pack!
-     * <li>There is no concept of resetting texture packs back to default
-     *     within Minecraft, so players will have to relog to do so or you
-     *     have to send an empty pack.
      * <li>The request is send with "null" as the hash. This might result
      *     in newer versions not loading the pack correctly.
      * </ul>
@@ -1891,9 +1888,6 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *     case this method will have no affect on them. Use the
      *     {@link PlayerResourcePackStatusEvent} to figure out whether or not
      *     the player loaded the pack!
-     * <li>There is no concept of resetting resource packs back to default
-     *     within Minecraft, so players will have to relog to do so or you
-     *     have to send an empty pack.
      * <li>The request is send with empty string as the hash. This might result
      *     in newer versions not loading the pack correctly.
      * </ul>
@@ -1930,9 +1924,6 @@ public interface Player extends HumanEntity, Conversable, OfflinePlayer, PluginM
      *     case this method will have no affect on them. Use the
      *     {@link PlayerResourcePackStatusEvent} to figure out whether or not
      *     the player loaded the pack!
-     * <li>There is no concept of resetting resource packs back to default
-     *     within Minecraft, so players will have to relog to do so or you
-     *     have to send an empty pack.
      * <li>The request is sent with empty string as the hash when the hash is
      *     not provided. This might result in newer versions not loading the
      *     pack correctly.
diff --git a/src/main/java/org/bukkit/entity/Slime.java b/src/main/java/org/bukkit/entity/Slime.java
index a5ad3250cebfeb302c58e0bfd6db1295913c927e..0a2d603bf6a3f60d3fa7d85df6ef2373fc93d848 100644
--- a/src/main/java/org/bukkit/entity/Slime.java
+++ b/src/main/java/org/bukkit/entity/Slime.java
@@ -11,6 +11,16 @@ public interface Slime extends Mob, Enemy {
     public int getSize();
 
     /**
+     * Setting the size of the slime (regardless of previous size)
+     * will set the following attributes:
+     * <ul>
+     *     <li>{@link org.bukkit.attribute.Attribute#MAX_HEALTH}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#MOVEMENT_SPEED}</li>
+     *     <li>{@link org.bukkit.attribute.Attribute#ATTACK_DAMAGE}</li>
+     * </ul>
+     * to their per-size defaults and heal the
+     * slime to its max health (assuming it's alive).
+     *
      * @param sz The new size of the slime.
      */
     public void setSize(int sz);
diff --git a/src/main/java/org/bukkit/entity/Sniffer.java b/src/main/java/org/bukkit/entity/Sniffer.java
index af5110b4160979c39cc1e5de6fa3bd7957b21403..15a0a733b0e5804655b5957cbf20831290d52a08 100644
--- a/src/main/java/org/bukkit/entity/Sniffer.java
+++ b/src/main/java/org/bukkit/entity/Sniffer.java
@@ -12,8 +12,6 @@ public interface Sniffer extends Animals {
 
     /**
      * Gets the locations explored by the sniffer.
-     * <br>
-     * <b>Note:</b> the returned locations use sniffer's current world.
      *
      * @return a collection of locations
      */
@@ -22,9 +20,6 @@ public interface Sniffer extends Animals {
 
     /**
      * Remove a location of the explored locations.
-     * <br>
-     * <b>Note:</b> the location must be in the sniffer's current world for this
-     * method to have any effect.
      *
      * @param location the location to remove
      * @see #getExploredLocations()
diff --git a/src/main/java/org/bukkit/entity/Villager.java b/src/main/java/org/bukkit/entity/Villager.java
index c48f13cc8ece0fa9913450e4402e496ce01a03fb..af4582f3e4687933dac6ccd43667a373f8daedb6 100644
--- a/src/main/java/org/bukkit/entity/Villager.java
+++ b/src/main/java/org/bukkit/entity/Villager.java
@@ -224,7 +224,7 @@ public interface Villager extends AbstractVillager {
          */
         Profession NITWIT = getProfession("nitwit");
         /**
-         * Sheperd profession. Wears a brown robe. Shepherds primarily trade for
+         * Shepherd profession. Wears a brown robe. Shepherds primarily trade for
          * wool items, and shears.
          */
         Profession SHEPHERD = getProfession("shepherd");
diff --git a/src/main/java/org/bukkit/event/block/BlockDropItemEvent.java b/src/main/java/org/bukkit/event/block/BlockDropItemEvent.java
index a0f6f1af304190b4c5db4b284d460f625eeb7801..7e21548cac8515c281ec86853e9272ab7695b24f 100644
--- a/src/main/java/org/bukkit/event/block/BlockDropItemEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockDropItemEvent.java
@@ -10,15 +10,19 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called if a block broken by a player drops an item.
+ * Called after a block is broken by a player and potential drops are computed, even if said blocks loot table
+ * does not define any drops at the point the event is constructed.
  *
  * If the block break is cancelled, this event won't be called.
  *
- * If isDropItems in BlockBreakEvent is set to false, this event won't be
+ * If isDropItems in {@link org.bukkit.event.block.BlockBreakEvent} is set to false, this event won't be
  * called.
  *
+ * If a block is broken and isDropItems is set to true, this event will be called even if the block does
+ * not drop any items, for example glass broken by hand. In this case, #getItems() will be empty.
+ *
  * This event will also be called if the player breaks a multi block structure,
- * for example a torch on top of a stone. Both items will have an event call.
+ * for example a torch on top of a stone. Both items will be included in the #getItems() list.
  *
  * The Block is already broken as this event is called, so #getBlock() will be
  * AIR in most cases. Use #getBlockState() for more Information about the broken
diff --git a/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java b/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
index 1df172c0bb48de3b143179a3f0c63d6ecc30649e..254d549f956053af4264ca3a52d34a97ede4273d 100644
--- a/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockExplodeEvent.java
@@ -14,6 +14,9 @@ import org.jetbrains.annotations.NotNull;
  * Note that due to the nature of explosions, {@link #getBlock()} will always be
  * an air block. {@link #getExplodedBlockState()} should be used to get
  * information about the block state that exploded.
+ * <p>
+ * The event isn't called if the {@link org.bukkit.GameRule#MOB_GRIEFING}
+ * is disabled as no block interaction will occur.
  */
 public class BlockExplodeEvent extends BlockEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/block/BlockPistonRetractEvent.java b/src/main/java/org/bukkit/event/block/BlockPistonRetractEvent.java
index 0392cc3a00f77a11608bf78cc157a411c7bcd976..23b3f44ab009bd49dac60a4045f12858f12cb2ba 100644
--- a/src/main/java/org/bukkit/event/block/BlockPistonRetractEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockPistonRetractEvent.java
@@ -34,7 +34,7 @@ public class BlockPistonRetractEvent extends BlockPistonEvent {
 
     /**
      * Get an immutable list of the blocks which will be moved by the
-     * extending.
+     * retracting.
      *
      * @return Immutable list of the moved blocks.
      */
diff --git a/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java b/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
index 77215c1dd2419104607138c45666ce0d84866670..3bfd0f6edc44d6503988f3c3c7a267f1be2986e3 100644
--- a/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
+++ b/src/main/java/org/bukkit/event/block/BlockPlaceEvent.java
@@ -114,7 +114,7 @@ public class BlockPlaceEvent extends BlockEvent implements Cancellable {
 
     /**
      * Gets the value whether the player would be allowed to build here.
-     * Defaults to spawn if the server was going to stop them (such as, the
+     * Defaults to false if the server was going to stop them (such as, the
      * player is in Spawn). Note that this is an entirely different check
      * than BLOCK_CANBUILD, as this refers to a player, not universe-physics
      * rule like cactus on dirt.
diff --git a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
index a722e090e788f5497569e69137923682e2abcbac..4c8f388897ff9ddd077695172622c5550651858b 100644
--- a/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
+++ b/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java
@@ -81,7 +81,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
     /**
      * Get a list of available {@link EnchantmentOffer} for the player. You can
      * modify the values to change the available offers for the player. An offer
-     * may be null, if there isn't a enchantment offer at a specific slot. There
+     * may be null, if there isn't an enchantment offer at a specific slot. There
      * are 3 slots in the enchantment table available to modify.
      *
      * @return list of available enchantment offers
diff --git a/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java b/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
index a37febd0d4dd5b733e9ee72628fdf9395fec4367..9cee218b9ee14688356f16b1f58512186286e7e9 100644
--- a/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
+++ b/src/main/java/org/bukkit/event/entity/AreaEffectCloudApplyEvent.java
@@ -8,7 +8,7 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a lingering potion applies it's effects. Happens
+ * Called when a lingering potion applies its effects. Happens
  * once every 5 ticks
  */
 public class AreaEffectCloudApplyEvent extends EntityEvent implements Cancellable {
diff --git a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
index c746c2e73ab9c91376ceaeab43423edb8009fe1a..5d2597378d36ccace672db0768267d3499100cf1 100644
--- a/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+++ b/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
@@ -158,11 +158,12 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
          */
         DROWNED,
         /**
-         * When an cow is spawned by shearing a mushroom cow
+         * When a cow is spawned by shearing a mushroom cow
          */
         SHEARED,
         /**
-         * When eg an effect cloud is spawned as a result of a creeper exploding
+         * When an entity is spawned as a result of an explosion. Like an area effect cloud from
+         * a creeper or a dragon fireball.
          */
         EXPLOSION,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityDamageByBlockEvent.java b/src/main/java/org/bukkit/event/entity/EntityDamageByBlockEvent.java
index 0a3699226be1941c0ad1ff1ad8f80bad3aec42aa..971093bd2500543e680db1c92f781bfd5c35dd83 100644
--- a/src/main/java/org/bukkit/event/entity/EntityDamageByBlockEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityDamageByBlockEvent.java
@@ -12,6 +12,10 @@ import org.jetbrains.annotations.Nullable;
 
 /**
  * Called when an entity is damaged by a block
+ * <p>
+ * For explosions, the Block returned by {@link #getDamager()} has
+ * already been cleared. See {@link #getDamagerBlockState()} for a snapshot
+ * of the block if it has already been changed.
  */
 public class EntityDamageByBlockEvent extends EntityDamageEvent {
     private final Block damager;
@@ -51,6 +55,9 @@ public class EntityDamageByBlockEvent extends EntityDamageEvent {
 
     /**
      * Returns the captured BlockState of the block that damaged the player.
+     * <p>
+     * This block state is not placed so {@link org.bukkit.block.BlockState#isPlaced}
+     * will be false.
      *
      * @return the block state
      */
diff --git a/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java b/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
index fc2158793aec67310bc8d06ac1f0bac39d2a5c3d..50161d313cfcc9e61441589685c3d0e1f057dd86 100644
--- a/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityExplodeEvent.java
@@ -10,7 +10,9 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when an entity explodes
+ * Called when an entity explodes interacting with blocks. The
+ * event isn't called if the {@link org.bukkit.GameRule#MOB_GRIEFING}
+ * is disabled as no block interaction will occur.
  */
 public class EntityExplodeEvent extends EntityEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java b/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
index c866df03d66dd8724e12c7353da4cf144c70b2c8..94ee5a3354722aa5d825da727b7b7071fdc6bacc 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPickupItemEvent.java
@@ -7,7 +7,7 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Thrown when a entity picks an item up from the ground
+ * Thrown when an entity picks an item up from the ground
  */
 public class EntityPickupItemEvent extends EntityEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java b/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
index 4f116956071148a1a148b94ceb4654d3934e2f7f..a7bd15d51a4ff9142cfb341f65050a88b5f5fa8d 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPlaceEvent.java
@@ -11,7 +11,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * Triggered when a entity is created in the world by a player "placing" an item
+ * Triggered when an entity is created in the world by a player "placing" an item
  * on a block.
  * <br>
  * Note that this event is currently only fired for four specific placements:
diff --git a/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java b/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
index 31a5515c08c9454d52a0d946d103a2d526c15e48..d743cc5ee34fd7bc5db92f4b17fed9f3aa5ffbcc 100644
--- a/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityPotionEffectEvent.java
@@ -133,7 +133,7 @@ public class EntityPotionEffectEvent extends EntityEvent implements Cancellable
     public enum Action {
 
         /**
-         * When the potion effect is added because the entity didn't have it's
+         * When the potion effect is added because the entity didn't have its
          * type.
          */
         ADDED,
@@ -237,7 +237,7 @@ public class EntityPotionEffectEvent extends EntityEvent implements Cancellable
          */
         SPIDER_SPAWN,
         /**
-         * When the entity gets effects from a totem item saving it's life.
+         * When the entity gets effects from a totem item saving its life.
          */
         TOTEM,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java b/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
index d51d2ec1d04d9ea8a25a70d0d856f2355ebfcb4a..7ecff9fcee19fc94be784474fea620e5dd434731 100644
--- a/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityRegainHealthEvent.java
@@ -105,7 +105,7 @@ public class EntityRegainHealthEvent extends EntityEvent implements Cancellable
          */
         SATIATED,
         /**
-         * When a player regains health from eating consumables
+         * When an animal regains health from eating consumables
          */
         EATING,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java b/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
index 842cfd3e9829c61250e98d1a45602a81549de176..808142232a722cb6466bac78d00dc55c18ebe109 100644
--- a/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
+++ b/src/main/java/org/bukkit/event/entity/EntityTargetEvent.java
@@ -156,7 +156,7 @@ public class EntityTargetEvent extends EntityEvent implements Cancellable {
         FOLLOW_LEADER,
         /**
          * When another entity tempts this entity by having a desired item such
-         * as wheat in it's hand.
+         * as wheat in its hand.
          */
         TEMPT,
         /**
diff --git a/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java b/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
index c17ff41a688b2cbd877cda25d4ec033ac8ef5524..bd67b7cba78b9bbdd82a5a40048e658a979e3108 100644
--- a/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
+++ b/src/main/java/org/bukkit/event/entity/PiglinBarterEvent.java
@@ -10,8 +10,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Stores all data related to the bartering interaction with a piglin.
  *
- * This event can be triggered by a piglin picking up an item that's on its
- * bartering list.
+ * Called when a piglin completes a barter.
  */
 public class PiglinBarterEvent extends EntityEvent implements Cancellable {
 
diff --git a/src/main/java/org/bukkit/event/inventory/FurnaceBurnEvent.java b/src/main/java/org/bukkit/event/inventory/FurnaceBurnEvent.java
index bc71bc2d3ace0d19d730c09f05f9e0655bcee8f5..24077da8e6a7937f66eafc6779206055cf82e8d2 100644
--- a/src/main/java/org/bukkit/event/inventory/FurnaceBurnEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/FurnaceBurnEvent.java
@@ -8,7 +8,9 @@ import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when an ItemStack is successfully burned as fuel in a furnace.
+ * Called when an ItemStack is successfully burned as fuel in a furnace-like block such as a
+ * {@link org.bukkit.block.Furnace}, {@link org.bukkit.block.Smoker}, or
+ * {@link org.bukkit.block.BlastFurnace}.
  */
 public class FurnaceBurnEvent extends BlockEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/inventory/FurnaceExtractEvent.java b/src/main/java/org/bukkit/event/inventory/FurnaceExtractEvent.java
index 65db4991bd4789991868c0d75fea4034fed487a8..5ffd28fd24b4477a07fc9f6a3f669a6f4da9fa26 100644
--- a/src/main/java/org/bukkit/event/inventory/FurnaceExtractEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/FurnaceExtractEvent.java
@@ -9,7 +9,9 @@ import org.bukkit.material.MaterialData;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * This event is called when a player takes items out of the furnace
+ * This event is called when a player takes items out of a furnace-like block such as a
+ * {@link org.bukkit.block.Furnace}, {@link org.bukkit.block.Smoker}, or
+ * {@link org.bukkit.block.BlastFurnace}.
  */
 public class FurnaceExtractEvent extends BlockExpEvent {
     private final Player player;
diff --git a/src/main/java/org/bukkit/event/inventory/FurnaceSmeltEvent.java b/src/main/java/org/bukkit/event/inventory/FurnaceSmeltEvent.java
index 066e7dd9a34d35c8b643a5efcf95d6a5ef47c7ee..f8f9b08a0bd82a2667ae4e0c99dae9103f0db3f0 100644
--- a/src/main/java/org/bukkit/event/inventory/FurnaceSmeltEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/FurnaceSmeltEvent.java
@@ -6,7 +6,9 @@ import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when an ItemStack is successfully smelted in a furnace.
+ * Called when an ItemStack is successfully smelted in a furnace-like block
+ * such as a {@link org.bukkit.block.Furnace}, {@link org.bukkit.block.Smoker},
+ * or {@link org.bukkit.block.BlastFurnace}.
  */
 public class FurnaceSmeltEvent extends BlockCookEvent {
 
diff --git a/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java b/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
index 1440c6115520d692faf75455df35b92aa8734491..0808e7aeffb69160913344de5b5e21d5e857f1d6 100644
--- a/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/FurnaceStartSmeltEvent.java
@@ -8,7 +8,10 @@ import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a Furnace starts smelting.
+ * Called when any of the furnace-like blocks start smelting.
+ * <p>
+ * Furnace-like blocks are {@link org.bukkit.block.Furnace},
+ * {@link org.bukkit.block.Smoker}, and {@link org.bukkit.block.BlastFurnace}.
  */
 public class FurnaceStartSmeltEvent extends InventoryBlockStartEvent {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java b/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
index e1f0ae392c14b940581ed966da42a58ec5cb005d..5832c610e4fad1372e70dc01bd04ba684a89b492 100644
--- a/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/InventoryClickEvent.java
@@ -16,12 +16,16 @@ import org.jetbrains.annotations.Nullable;
 /**
  * This event is called when a player clicks in an inventory.
  * <p>
+ * In case of a drag action within an inventory, InventoryClickEvent is never called.
+ * Instead, {@link InventoryDragEvent} is called at the end of the drag.
+ * <p>
  * Because InventoryClickEvent occurs within a modification of the Inventory,
  * not all Inventory related methods are safe to use.
  * <p>
- * The following should never be invoked by an EventHandler for
- * InventoryClickEvent using the HumanEntity or InventoryView associated with
- * this event:
+ * Methods that change the view a player is looking at should never be invoked
+ * by an EventHandler for InventoryClickEvent using the HumanEntity or
+ * InventoryView associated with this event.
+ * Examples of these include:
  * <ul>
  * <li>{@link HumanEntity#closeInventory()}
  * <li>{@link HumanEntity#openInventory(Inventory)}
@@ -92,7 +96,7 @@ public class InventoryClickEvent extends InventoryInteractEvent {
     /**
      * Gets the ItemStack currently in the clicked slot.
      *
-     * @return the item in the clicked
+     * @return the item in the clicked slot
      */
     @Nullable
     public ItemStack getCurrentItem() {
diff --git a/src/main/java/org/bukkit/event/inventory/InventoryCloseEvent.java b/src/main/java/org/bukkit/event/inventory/InventoryCloseEvent.java
index 5861247c1b8ee4fe2736fd5098e05a2ca9ab78ea..c0cc82d98348e8aae3cb56bafb2fcb590b03094f 100644
--- a/src/main/java/org/bukkit/event/inventory/InventoryCloseEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/InventoryCloseEvent.java
@@ -7,7 +7,26 @@ import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Represents a player related inventory event
+ * This event is called when a player closes an inventory.
+ * <p>
+ * Because InventoryCloseEvent occurs within a modification of the Inventory,
+ * not all Inventory related methods are safe to use.
+ * <p>
+ * Methods that change the view a player is looking at should never be invoked
+ * by an EventHandler for InventoryCloseEvent using the HumanEntity or
+ * InventoryView associated with this event.
+ * Examples of these include:
+ * <ul>
+ * <li>{@link HumanEntity#closeInventory()}
+ * <li>{@link HumanEntity#openInventory(org.bukkit.inventory.Inventory)}
+ * <li>{@link HumanEntity#openWorkbench(org.bukkit.Location, boolean)}
+ * <li>{@link HumanEntity#openEnchanting(org.bukkit.Location, boolean)}
+ * <li>{@link InventoryView#close()}
+ * </ul>
+ * To invoke one of these methods, schedule a task using
+ * {@link org.bukkit.scheduler.BukkitScheduler#runTask(org.bukkit.plugin.Plugin, Runnable)}, which will run the task
+ * on the next tick. Also be aware that this is not an exhaustive list, and
+ * other methods could potentially create issues as well.
  */
 public class InventoryCloseEvent extends InventoryEvent {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java b/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
index 9013d043503d175004ad276799e5935b7fa59dc4..ceae092eb782698803c6c3df41267dde20ba62b2 100644
--- a/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/InventoryOpenEvent.java
@@ -7,7 +7,7 @@ import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Represents a player related inventory event
+ * Called when a player opens an inventory
  */
 public class InventoryOpenEvent extends InventoryEvent implements Cancellable {
     private static final HandlerList handlers = new HandlerList();
diff --git a/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java b/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
index 08a7c564fe5d3d232998d1789d4d4723a59c1430..8a5be3f0322ac19aeac3f00df54add0e73bc87ed 100644
--- a/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
+++ b/src/main/java/org/bukkit/event/inventory/PrepareAnvilEvent.java
@@ -24,6 +24,20 @@ public class PrepareAnvilEvent extends PrepareInventoryResultEvent {
         return (AnvilInventory) super.getInventory();
     }
 
+    /**
+     * {@inheritDoc}
+     *
+     * <p>
+     * Note: by default custom recipes in anvil are disabled
+     * you should define a repair cost on the anvil inventory
+     * greater or equals to zero in order to allow that.
+     *
+     * @param result result item
+     */
+    public void setResult(@Nullable ItemStack result) {
+        super.setResult(result);
+    }
+
     @NotNull
     @Override
     public AnvilView getView() {
diff --git a/src/main/java/org/bukkit/event/player/PlayerCommandPreprocessEvent.java b/src/main/java/org/bukkit/event/player/PlayerCommandPreprocessEvent.java
index c3eb020498121746ac0650522b15f1346bbca5fa..9eb2c2a1fe385d306df8e44476339073a7532f60 100644
--- a/src/main/java/org/bukkit/event/player/PlayerCommandPreprocessEvent.java
+++ b/src/main/java/org/bukkit/event/player/PlayerCommandPreprocessEvent.java
@@ -106,7 +106,9 @@ public class PlayerCommandPreprocessEvent extends PlayerEvent implements Cancell
      *
      * @param player New player which this event will execute as
      * @throws IllegalArgumentException if the player provided is null
+     * @deprecated Only works for sign commands; use {@link Player#performCommand(String)}, including those cases
      */
+    @Deprecated(forRemoval = true)
     public void setPlayer(@NotNull final Player player) throws IllegalArgumentException {
         Preconditions.checkArgument(player != null, "Player cannot be null");
         this.player = player;
@@ -123,11 +125,10 @@ public class PlayerCommandPreprocessEvent extends PlayerEvent implements Cancell
      * unmodifiable set.
      *
      * @return All Players who will see this chat message
-     * @deprecated This method is provided for backward compatibility with no
-     *     guarantee to the effect of viewing or modifying the set.
+     * @deprecated This is simply the online players. Modifications have no effect
      */
     @NotNull
-    @Deprecated(since = "1.3.1")
+    @Deprecated(since = "1.3.1", forRemoval = true)
     public Set<Player> getRecipients() {
         return recipients;
     }
diff --git a/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java b/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
index e4c32b21ab013703a6a1b07a1ad564d914ebe83f..e58fecf0fe54db06e0e944027923a352fd8005d8 100644
--- a/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
+++ b/src/main/java/org/bukkit/event/player/PlayerResourcePackStatusEvent.java
@@ -6,8 +6,9 @@ import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Called when a player takes action on a resource pack request sent via
- * {@link Player#setResourcePack(java.lang.String)}.
+ * Called when a player takes action on a resource pack request.
+ * @see Player#setResourcePack(String, String)
+ * @see Player#setResourcePack(String, String, boolean)
  */
 public class PlayerResourcePackStatusEvent extends PlayerEvent {
 
diff --git a/src/main/java/org/bukkit/generator/ChunkGenerator.java b/src/main/java/org/bukkit/generator/ChunkGenerator.java
index 4b952b0178de24e0902b48dfceff99ef1c926e43..b4dab4cf521c7fb067e88d985572f12d14a2c8df 100644
--- a/src/main/java/org/bukkit/generator/ChunkGenerator.java
+++ b/src/main/java/org/bukkit/generator/ChunkGenerator.java
@@ -627,7 +627,7 @@ public abstract class ChunkGenerator {
          * Get the biome at x, y, z within chunk being generated
          *
          * @param x the x location in the chunk from 0-15 inclusive
-         * @param y the y location in the chunk from minimum (inclusive) -
+         * @param y the y location in the chunk from minHeight (inclusive) -
          * maxHeight (exclusive)
          * @param z the z location in the chunk from 0-15 inclusive
          * @return Biome value
diff --git a/src/main/java/org/bukkit/inventory/EntityEquipment.java b/src/main/java/org/bukkit/inventory/EntityEquipment.java
index 37298cec0234b6c681d912791c1235fbfc427d93..720038083f8c8ab1f29ac424f2d9dbb5cbc8b533 100644
--- a/src/main/java/org/bukkit/inventory/EntityEquipment.java
+++ b/src/main/java/org/bukkit/inventory/EntityEquipment.java
@@ -37,9 +37,23 @@ public interface EntityEquipment {
     public ItemStack getItem(@NotNull EquipmentSlot slot);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their main hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInMainHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInMainHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -61,9 +75,23 @@ public interface EntityEquipment {
     void setItemInMainHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
      * in their off hand.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInOffHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInOffHand(); // will return a copy
+     * }
+     * }</pre>
+     *
      * @return the currently held item
      */
     @NotNull
@@ -85,7 +113,21 @@ public interface EntityEquipment {
     void setItemInOffHand(@Nullable ItemStack item, boolean silent);
 
     /**
-     * Gets a copy of the item the entity is currently holding
+     * Gets the item the entity is currently holding
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getItemInHand(); // will return a mirror
+     * } else {
+     *     equipment.getItemInHand(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return the currently held item
      * @see #getItemInMainHand()
@@ -110,11 +152,24 @@ public interface EntityEquipment {
     void setItemInHand(@Nullable ItemStack stack);
 
     /**
-     * Gets a copy of the helmet currently being worn by the entity
+     * Gets the helmet currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getHelmet(); // will return a mirror
+     * } else {
+     *     equipment.getHelmet(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The helmet being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getHelmet();
 
     /**
@@ -133,11 +188,24 @@ public interface EntityEquipment {
     void setHelmet(@Nullable ItemStack helmet, boolean silent);
 
     /**
-     * Gets a copy of the chest plate currently being worn by the entity
+     * Gets the chest plate currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getChestplate(); // will return a mirror
+     * } else {
+     *     equipment.getChestplate(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The chest plate being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getChestplate();
 
     /**
@@ -156,11 +224,24 @@ public interface EntityEquipment {
     void setChestplate(@Nullable ItemStack chestplate, boolean silent);
 
     /**
-     * Gets a copy of the leggings currently being worn by the entity
+     * Gets the leggings currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getLeggings(); // will return a mirror
+     * } else {
+     *     equipment.getLeggings(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The leggings being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getLeggings();
 
     /**
@@ -179,11 +260,24 @@ public interface EntityEquipment {
     void setLeggings(@Nullable ItemStack leggings, boolean silent);
 
     /**
-     * Gets a copy of the boots currently being worn by the entity
+     * Gets the boots currently being worn by the entity
+     *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player.
+     * For stacks from players, this returns a live mirror (or null). You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getBoots(); // will return a mirror
+     * } else {
+     *     equipment.getBoots(); // will return a copy
+     * }
+     * }</pre>
      *
      * @return The boots being worn
      */
-    @Nullable
+    @org.bukkit.UndefinedNullability("not null for entities, nullable for players") // Paper
     ItemStack getBoots();
 
     /**
@@ -204,12 +298,25 @@ public interface EntityEquipment {
     /**
      * Gets all ItemStacks from the armor slots.
      *
+     * <p>
+     * This returns a copy if this equipment instance is from a non-player,
+     * or it's an empty stack (has AIR as its type).
+     * For non-empty stacks from players, this returns a live mirror. You can check if this
+     * will return a mirror with
+     * <pre>{@code
+     * EntityEquipment equipment = entity.getEquipment();
+     * if (equipment instanceof PlayerInventory) {
+     *     equipment.getArmorContents(); // will return an array of mirror
+     * } else {
+     *     equipment.getArmorContents(); // will return an array of copies
+     * }
+     * }</pre>
+     *
      * @return all the ItemStacks from the armor slots. Individual items can be
      * null and are returned in a fixed order starting from the boots and going
      * up to the helmet
      */
-    @NotNull
-    ItemStack[] getArmorContents();
+    @org.bukkit.UndefinedNullability("not null elements for entities, nullable elements for players") ItemStack @NotNull [] getArmorContents(); // Paper
 
     /**
      * Sets the entities armor to the provided array of ItemStacks
@@ -249,7 +356,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop killed by anything
      * </ul>
      *
      * @return chance of the currently held item being dropped (1 for non-{@link Mob})
@@ -262,7 +370,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance the chance of the main hand item being dropped
@@ -276,7 +385,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @return chance of the off hand item being dropped (1 for non-{@link Mob})
@@ -289,7 +399,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance the chance of off hand item being dropped
@@ -302,7 +413,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @return the chance of the helmet being dropped (1 for non-{@link Mob})
@@ -314,7 +426,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance of the helmet being dropped
@@ -328,7 +441,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @return the chance of the chest plate being dropped (1 for non-{@link Mob})
@@ -341,7 +455,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance of the chest plate being dropped
@@ -355,7 +470,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @return the chance of the leggings being dropped (1 for non-{@link Mob})
@@ -368,7 +484,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance chance of the leggings being dropped
@@ -381,7 +498,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @return the chance of the boots being dropped (1 for non-{@link Mob})
@@ -393,7 +511,8 @@ public interface EntityEquipment {
      *
      * <ul>
      * <li>A drop chance of 0.0F will never drop
-     * <li>A drop chance of 1.0F will always drop
+     * <li>A drop chance of exactly 1.0F will always drop if killed by a player
+     * <li>A drop chance of greater than 1.0F will always drop if killed by anything
      * </ul>
      *
      * @param chance of the boots being dropped
diff --git a/src/main/java/org/bukkit/inventory/ItemFlag.java b/src/main/java/org/bukkit/inventory/ItemFlag.java
index 8453bd058d426c1088b04c55d2448d205f0a104b..1b3580d1861af402396121805715e4087b3bc587 100644
--- a/src/main/java/org/bukkit/inventory/ItemFlag.java
+++ b/src/main/java/org/bukkit/inventory/ItemFlag.java
@@ -35,7 +35,7 @@ public enum ItemFlag {
      */
     HIDE_DYE,
     /**
-     * Setting to show/hide armor trim from leather armor.
+     * Setting to show/hide armor trim from armor.
      */
     HIDE_ARMOR_TRIM;
 }
diff --git a/src/main/java/org/bukkit/inventory/PlayerInventory.java b/src/main/java/org/bukkit/inventory/PlayerInventory.java
index 6933fb24ea3e6c2e306a69407ae7fa280101419a..b1f4b8f2666e8012eb8a1e21a2b958fe6e03f74f 100644
--- a/src/main/java/org/bukkit/inventory/PlayerInventory.java
+++ b/src/main/java/org/bukkit/inventory/PlayerInventory.java
@@ -160,7 +160,7 @@ public interface PlayerInventory extends Inventory {
     public void setBoots(@Nullable ItemStack boots);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their main hand.
      *
      * @return the currently held item
@@ -176,7 +176,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInMainHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      * in their off hand.
      *
      * @return the currently held item
@@ -192,7 +192,7 @@ public interface PlayerInventory extends Inventory {
     void setItemInOffHand(@Nullable ItemStack item);
 
     /**
-     * Gets a copy of the item the player is currently holding
+     * Gets the item the player is currently holding
      *
      * @return the currently held item
      * @see #getItemInMainHand()
diff --git a/src/main/java/org/bukkit/inventory/ShapedRecipe.java b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
index 83b08fa8a42b07a9abc84f30df921a5c2a60adbf..64916d17ee81cf2eaec7fbac1cb071db3b3eb258 100644
--- a/src/main/java/org/bukkit/inventory/ShapedRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapedRecipe.java
@@ -24,8 +24,6 @@ public class ShapedRecipe extends CraftingRecipe {
      * @param result The item you want the recipe to create.
      * @see ShapedRecipe#shape(String...)
      * @see ShapedRecipe#setIngredient(char, Material)
-     * @see ShapedRecipe#setIngredient(char, Material, int)
-     * @see ShapedRecipe#setIngredient(char, MaterialData)
      * @see ShapedRecipe#setIngredient(char, RecipeChoice)
      * @deprecated Recipes must have keys. Use {@link #ShapedRecipe(NamespacedKey, ItemStack)}
      * instead.
@@ -45,8 +43,6 @@ public class ShapedRecipe extends CraftingRecipe {
      * @exception IllegalArgumentException if the {@code result} is an empty item (AIR)
      * @see ShapedRecipe#shape(String...)
      * @see ShapedRecipe#setIngredient(char, Material)
-     * @see ShapedRecipe#setIngredient(char, Material, int)
-     * @see ShapedRecipe#setIngredient(char, MaterialData)
      * @see ShapedRecipe#setIngredient(char, RecipeChoice)
      */
     public ShapedRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result) {
diff --git a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
index 969710cc69fe4c1265f509915cd6bf78d47a2d78..354af775093fd3a74dac6c64244d8f3464397f72 100644
--- a/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
+++ b/src/main/java/org/bukkit/inventory/ShapelessRecipe.java
@@ -31,11 +31,8 @@ public class ShapelessRecipe extends CraftingRecipe {
      * @param result The item you want the recipe to create.
      * @exception IllegalArgumentException if the {@code result} is an empty item (AIR)
      * @see ShapelessRecipe#addIngredient(Material)
-     * @see ShapelessRecipe#addIngredient(MaterialData)
-     * @see ShapelessRecipe#addIngredient(Material,int)
      * @see ShapelessRecipe#addIngredient(int,Material)
-     * @see ShapelessRecipe#addIngredient(int,MaterialData)
-     * @see ShapelessRecipe#addIngredient(int,Material,int)
+     * @see ShapelessRecipe#addIngredient(RecipeChoice)
      */
     public ShapelessRecipe(@NotNull NamespacedKey key, @NotNull ItemStack result) {
         super(key, checkResult(result));
@@ -175,7 +172,7 @@ public class ShapelessRecipe extends CraftingRecipe {
 
     /**
      * Removes multiple instances of an ingredient from the list. If there are
-     * less instances then specified, all will be removed. Only removes exact
+     * fewer instances than specified, all will be removed. Only removes exact
      * matches, with a data value of 0.
      *
      * @param count The number of copies to remove.
diff --git a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
index 07c3dff4d6190ef388d9c1e1c36f67f00a3e8e66..597a18a767b68b47e81454b7d44613c7178c1366 100644
--- a/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
+++ b/src/main/java/org/bukkit/inventory/StonecuttingRecipe.java
@@ -28,7 +28,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Create a cooking recipe to craft the specified ItemStack.
+     * Create a Stonecutting recipe to craft the specified ItemStack.
      *
      * @param key The unique recipe key
      * @param result The item you want the recipe to create.
@@ -42,7 +42,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Sets the input of this cooking recipe.
+     * Sets the input of this Stonecutting recipe.
      *
      * @param input The input material.
      * @return The changed recipe, so you can chain calls.
@@ -64,7 +64,7 @@ public class StonecuttingRecipe implements Recipe, Keyed {
     }
 
     /**
-     * Sets the input of this cooking recipe.
+     * Sets the input of this Stonecutting recipe.
      *
      * @param input The input choice.
      * @return The changed recipe, so you can chain calls.
diff --git a/src/main/java/org/bukkit/inventory/meta/BlockStateMeta.java b/src/main/java/org/bukkit/inventory/meta/BlockStateMeta.java
index e7d905b1146b2bdd2da5bdeb6bf3541fb181d59e..c7d3041221742f6655155f19ef2addcaf2401015 100644
--- a/src/main/java/org/bukkit/inventory/meta/BlockStateMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/BlockStateMeta.java
@@ -32,6 +32,11 @@ public interface BlockStateMeta extends ItemMeta {
      * @param blockState the block state to attach to the block.
      * @throws IllegalArgumentException if the blockState is null
      *         or invalid for this item.
+     *
+     * @apiNote As of 1.20.5 the block state carries a copy of the item's data deviations.
+     * As such, setting the block state via this method will reset secondary deviations of the item meta.
+     * This can manifest in the addition to an existing lore failing or a change of a previously added display name.
+     * It is hence recommended to first mutate the block state, set it back, and then mutate the item meta.
      */
     void setBlockState(@NotNull BlockState blockState);
 }
diff --git a/src/main/java/org/bukkit/inventory/meta/CrossbowMeta.java b/src/main/java/org/bukkit/inventory/meta/CrossbowMeta.java
index 35c6594fd1040a1af1029e7260e5e3a9307b107d..d58719ee75bef8bc265bfc81bc5d88a426e01dd9 100644
--- a/src/main/java/org/bukkit/inventory/meta/CrossbowMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/CrossbowMeta.java
@@ -28,8 +28,7 @@ public interface CrossbowMeta extends ItemMeta {
      * Removes all projectiles when given null.
      *
      * @param projectiles the projectiles to set
-     * @throws IllegalArgumentException if one of the projectiles is not an
-     * arrow or firework rocket
+     * @throws IllegalArgumentException if one of the projectiles is empty
      */
     void setChargedProjectiles(@Nullable List<ItemStack> projectiles);
 
@@ -37,8 +36,7 @@ public interface CrossbowMeta extends ItemMeta {
      * Adds a charged projectile to this item.
      *
      * @param item projectile
-     * @throws IllegalArgumentException if the projectile is not an arrow or
-     * firework rocket
+     * @throws IllegalArgumentException if the projectile is empty
      */
     void addChargedProjectile(@NotNull ItemStack item);
 }
diff --git a/src/main/java/org/bukkit/inventory/meta/ItemMeta.java b/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
index 753a756525f6afea981dd0c2984e7a747d4d148b..c083ac4344dd1b2b56cbe103ce80daac945defd5 100644
--- a/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/ItemMeta.java
@@ -328,7 +328,7 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
     /**
      * Gets the enchantable component. Higher values allow higher enchantments.
      *
-     * @return max_stack_size
+     * @return the enchantable value
      */
     int getEnchantable();
 
@@ -661,11 +661,6 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
 
     /**
      * Gets the item which this item will convert to when used.
-     * <p>
-     * The returned component is a snapshot of its current state and does not
-     * reflect a live view of what is on an item. After changing any value on
-     * this component, it must be set with {@link #setUseRemainder(ItemStack)}
-     * to apply the changes.
      *
      * @return remainder
      */
@@ -802,7 +797,7 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
      * The returned component is a snapshot of its current state and does not
      * reflect a live view of what is on an item. After changing any value on
      * this component, it must be set with
-     * {@link #setJukeboxPlayable(org.bukkit.inventory.meta.components.JukeboxComponent)}
+     * {@link #setJukeboxPlayable(org.bukkit.inventory.meta.components.JukeboxPlayableComponent)}
      * to apply the changes.
      *
      * @return component
@@ -811,7 +806,7 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
     JukeboxPlayableComponent getJukeboxPlayable();
 
     /**
-     * Sets the item tool.
+     * Sets the jukebox playable component.
      *
      * @param jukeboxPlayable new component
      */
@@ -838,7 +833,7 @@ public interface ItemMeta extends Cloneable, ConfigurationSerializable, Persiste
     /**
      * Return an immutable copy of all {@link Attribute}s and their
      * {@link AttributeModifier}s for a given {@link EquipmentSlot}.<br>
-     * Any {@link AttributeModifier} that does have have a given
+     * Any {@link AttributeModifier} that does have a given
      * {@link EquipmentSlot} will be returned. This is because
      * AttributeModifiers without a slot are active in any slot.<br>
      * If there are no attributes set for the given slot, an empty map
diff --git a/src/main/java/org/bukkit/inventory/meta/LeatherArmorMeta.java b/src/main/java/org/bukkit/inventory/meta/LeatherArmorMeta.java
index c1676991c3cc5f8d6e3f97d8cb356d6e2aa52809..c701d5fbc5fef503f18a3a46fa54c983bf96e895 100644
--- a/src/main/java/org/bukkit/inventory/meta/LeatherArmorMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/LeatherArmorMeta.java
@@ -8,8 +8,9 @@ import org.jetbrains.annotations.Nullable;
 
 /**
  * Represents leather armor ({@link Material#LEATHER_BOOTS}, {@link
- * Material#LEATHER_CHESTPLATE}, {@link Material#LEATHER_HELMET}, or {@link
- * Material#LEATHER_LEGGINGS}) that can be colored.
+ * Material#LEATHER_LEGGINGS}, {@link Material#LEATHER_CHESTPLATE}, {@link
+ * Material#LEATHER_HELMET}, {@link Material#LEATHER_HORSE_ARMOR} or {@link
+ * Material#WOLF_ARMOR}) that can be colored.
  */
 public interface LeatherArmorMeta extends ItemMeta {
 
@@ -18,6 +19,9 @@ public interface LeatherArmorMeta extends ItemMeta {
      * be {@link ItemFactory#getDefaultLeatherColor()}.
      *
      * @return the color of the armor, never null
+     * @apiNote The method yielding {@link ItemFactory#getDefaultLeatherColor()} is incorrect
+     * for {@link Material#WOLF_ARMOR} as its default color differs. Generally, it is recommended to check
+     * {@link #isDyed()} to determine if this leather armor is dyed than to compare this color to the default.
      */
     @NotNull
     Color getColor();
@@ -25,8 +29,7 @@ public interface LeatherArmorMeta extends ItemMeta {
     /**
      * Sets the color of the armor.
      *
-     * @param color the color to set. Setting it to null is equivalent to
-     *     setting it to {@link ItemFactory#getDefaultLeatherColor()}.
+     * @param color the color to set.
      */
     void setColor(@Nullable Color color);
 
diff --git a/src/main/java/org/bukkit/inventory/meta/OminousBottleMeta.java b/src/main/java/org/bukkit/inventory/meta/OminousBottleMeta.java
index 43f0df04f3cdff7d7db73321a2886f3a737e3c9f..5c741228b2338a7c4de2fe736eb789511abf4880 100644
--- a/src/main/java/org/bukkit/inventory/meta/OminousBottleMeta.java
+++ b/src/main/java/org/bukkit/inventory/meta/OminousBottleMeta.java
@@ -3,7 +3,7 @@ package org.bukkit.inventory.meta;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Represents a map that can be scalable.
+ * Represents an ominous bottle with an amplifier of the bad omen effect.
  */
 public interface OminousBottleMeta extends ItemMeta {
 
diff --git a/src/main/java/org/bukkit/inventory/meta/components/UseCooldownComponent.java b/src/main/java/org/bukkit/inventory/meta/components/UseCooldownComponent.java
index 4086a413895f82b51bf192ceffdfee4a939c6fed..172032e56ee8e4e1b13ec6b41a5122a33b18bc64 100644
--- a/src/main/java/org/bukkit/inventory/meta/components/UseCooldownComponent.java
+++ b/src/main/java/org/bukkit/inventory/meta/components/UseCooldownComponent.java
@@ -6,8 +6,7 @@ import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * Represents a component which determines the cooldown applied to use of this
- * item.
+ * Represents a component which determines the cooldown applied when using this item before it is available for use again.
  */
 @ApiStatus.Experimental
 public interface UseCooldownComponent extends ConfigurationSerializable {
@@ -39,7 +38,7 @@ public interface UseCooldownComponent extends ConfigurationSerializable {
     /**
      * Sets the custom cooldown group to be used for similar items.
      *
-     * @param song the cooldown group
+     * @param group the cooldown group
      */
-    void setCooldownGroup(@Nullable NamespacedKey song);
+    void setCooldownGroup(@Nullable NamespacedKey group);
 }
diff --git a/src/main/java/org/bukkit/plugin/Plugin.java b/src/main/java/org/bukkit/plugin/Plugin.java
index 8c76716249e44ed8bf6be94c1f5c7b6d9bb35be2..68a0ed5f0ed25e98f4ab4d1e482ec2ccfda9cd3a 100644
--- a/src/main/java/org/bukkit/plugin/Plugin.java
+++ b/src/main/java/org/bukkit/plugin/Plugin.java
@@ -18,7 +18,7 @@ import org.jetbrains.annotations.Nullable;
  */
 public interface Plugin extends TabExecutor {
     /**
-     * Returns the folder that the plugin data's files are located in. The
+     * Returns the folder that the plugin data files are located in. The
      * folder may not yet exist.
      *
      * @return The folder
@@ -27,9 +27,9 @@ public interface Plugin extends TabExecutor {
     public File getDataFolder();
 
     /**
-     * Returns the plugin.yaml file containing the details for this plugin
+     * Returns the plugin.yml file containing the details for this plugin
      *
-     * @return Contents of the plugin.yaml file
+     * @return Contents of the plugin.yml file
      * @deprecated May be inaccurate due to different plugin implementations.
      * @see Plugin#getPluginMeta()
      */
diff --git a/src/main/java/org/bukkit/plugin/java/JavaPlugin.java b/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
index 2a14522c484febcd880d00197df4359a0020dddd..7f17337b9f0fb60fa1c91c47af496c03290d1b1c 100644
--- a/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
+++ b/src/main/java/org/bukkit/plugin/java/JavaPlugin.java
@@ -69,7 +69,7 @@ public abstract class JavaPlugin extends PluginBase {
     }
 
     /**
-     * Returns the folder that the plugin data's files are located in. The
+     * Returns the folder that the plugin data files are located in. The
      * folder may not yet exist.
      *
      * @return The folder.
@@ -127,9 +127,9 @@ public abstract class JavaPlugin extends PluginBase {
     }
 
     /**
-     * Returns the plugin.yaml file containing the details for this plugin
+     * Returns the plugin.yml file containing the details for this plugin
      *
-     * @return Contents of the plugin.yaml file
+     * @return Contents of the plugin.yml file
      * @deprecated No longer applicable to all types of plugins
      */
     @NotNull
diff --git a/src/main/java/org/bukkit/plugin/messaging/PluginMessageRecipient.java b/src/main/java/org/bukkit/plugin/messaging/PluginMessageRecipient.java
index b84b37fe27d84574dc5897285f1d9a1437bd322c..281ae60a6be7e39aab4f27b4c7de3d49ada9a557 100644
--- a/src/main/java/org/bukkit/plugin/messaging/PluginMessageRecipient.java
+++ b/src/main/java/org/bukkit/plugin/messaging/PluginMessageRecipient.java
@@ -31,7 +31,8 @@ public interface PluginMessageRecipient {
 
     /**
      * Gets a set containing all the Plugin Channels that this client is
-     * listening on.
+     * listening on. Does not contain the BungeeCord channel due to its
+     * special status.
      *
      * @return Set containing all the channels that this client may accept.
      */
diff --git a/src/main/java/org/bukkit/projectiles/ProjectileSource.java b/src/main/java/org/bukkit/projectiles/ProjectileSource.java
index eabd8b926ec1c934cd7e77b7cc6adfae16771021..8557bfefaf02538dec95adb29734ae2cf50f3f8c 100644
--- a/src/main/java/org/bukkit/projectiles/ProjectileSource.java
+++ b/src/main/java/org/bukkit/projectiles/ProjectileSource.java
@@ -12,6 +12,10 @@ public interface ProjectileSource {
 
     /**
      * Launches a {@link Projectile} from the ProjectileSource.
+     * <p>
+     * The family of launchProjectile methods only promise the ability to launch projectile types
+     * that the {@link ProjectileSource} is capable of firing in vanilla.
+     * Any other types of projectiles *may* be implemented but are not part of the method contract.
      *
      * @param <T> a projectile subclass
      * @param projectile class of the projectile to launch
@@ -23,6 +27,10 @@ public interface ProjectileSource {
     /**
      * Launches a {@link Projectile} from the ProjectileSource with an
      * initial velocity.
+     * <p>
+     * The family of launchProjectile methods only promise the ability to launch projectile types
+     * that the {@link ProjectileSource} is capable of firing in vanilla.
+     * Any other types of projectiles *may* be implemented but are not part of the method contract.
      *
      * @param <T> a projectile subclass
      * @param projectile class of the projectile to launch
diff --git a/src/main/java/org/bukkit/scoreboard/Objective.java b/src/main/java/org/bukkit/scoreboard/Objective.java
index d57634dd3796a695aba7623d2b04e35d630887b3..35755c9165c1b48eaacfff86a50a7973476fe04b 100644
--- a/src/main/java/org/bukkit/scoreboard/Objective.java
+++ b/src/main/java/org/bukkit/scoreboard/Objective.java
@@ -86,7 +86,7 @@ public interface Objective {
      *
      * @return true if scores are modifiable
      * @throws IllegalStateException if this objective has been unregistered
-     * @see Criterias#HEALTH
+     * @see Criteria#HEALTH
      */
     boolean isModifiable();
 
diff --git a/src/main/java/org/bukkit/scoreboard/Team.java b/src/main/java/org/bukkit/scoreboard/Team.java
index 284468fd3d310a7acdffa31f0f6593f5a98419ba..38deee00cfe2f6803070e98cd9ded95d859bf8e1 100644
--- a/src/main/java/org/bukkit/scoreboard/Team.java
+++ b/src/main/java/org/bukkit/scoreboard/Team.java
@@ -265,7 +265,7 @@ public interface Team extends net.kyori.adventure.audience.ForwardingAudience {
      * Gets the Set of entries on the team
      *
      * @return entries on the team
-     * @throws IllegalStateException if this entries has been unregistered
+     * @throws IllegalStateException if this team has been unregistered
      */
     @NotNull
     Set<String> getEntries();
diff --git a/src/main/java/org/bukkit/util/BoundingBox.java b/src/main/java/org/bukkit/util/BoundingBox.java
index 9883983c33fcff0f4c1e23867adafa436e2ed96f..5017b73bcec0d4d5256d89db14201c03829dc981 100644
--- a/src/main/java/org/bukkit/util/BoundingBox.java
+++ b/src/main/java/org/bukkit/util/BoundingBox.java
@@ -358,7 +358,7 @@ public class BoundingBox implements Cloneable, ConfigurationSerializable {
      * <p>
      * Negative values will shrink the bounding box in the corresponding
      * direction. Shrinking will be limited to the point where the affected
-     * opposite faces would meet if the they shrank at uniform speeds.
+     * opposite faces would meet if they shrank at uniform speeds.
      *
      * @param negativeX the amount of expansion in the negative x direction
      * @param negativeY the amount of expansion in the negative y direction
diff --git a/src/main/java/org/bukkit/util/CachedServerIcon.java b/src/main/java/org/bukkit/util/CachedServerIcon.java
index 612958a331575d1da2715531ebdf6b1168f2e860..9a7768d41270714d4a1c89b4dcb436cc66f57545 100644
--- a/src/main/java/org/bukkit/util/CachedServerIcon.java
+++ b/src/main/java/org/bukkit/util/CachedServerIcon.java
@@ -5,7 +5,7 @@ import org.bukkit.event.server.ServerListPingEvent;
 import org.jetbrains.annotations.Nullable;
 
 /**
- * This is a cached version of a server-icon. It's internal representation
+ * This is a cached version of a server-icon. Its internal representation
  * and implementation is undefined.
  *
  * @see Server#getServerIcon()