SPIGOT-5899: Hoglins API similar to Piglins

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/entity/Hoglin.java

@@ -3,4 +3,61 @@ package org.bukkit.entity;
 /**
  * Represents a Hoglin.
  */
-public interface Hoglin extends Animals { }
+public interface Hoglin extends Animals {
+
+    /**
+     * Gets whether the hoglin is immune to zombification.
+     *
+     * @return Whether the hoglin is immune to zombification
+     */
+    public boolean isImmuneToZombification();
+
+    /**
+     * Sets whether the hoglin is immune to zombification.
+     *
+     * @param flag Whether the hoglin is immune to zombification
+     */
+    public void setImmuneToZombification(boolean flag);
+
+    /**
+     * Get whether the hoglin is able to be hunted by piglins.
+     *
+     * @return Whether the hoglin is able to be hunted by piglins
+     */
+    public boolean isAbleToBeHunted();
+
+    /**
+     * Sets whether the hoglin is able to be hunted by piglins.
+     *
+     * @param flag Whether the hoglin is able to be hunted by piglins.
+     */
+    public void setIsAbleToBeHunted(boolean flag);
+
+    /**
+     * Gets the amount of ticks until this entity will be converted to a Zoglin.
+     *
+     * When this reaches 300, the entity will be converted.
+     *
+     * @return conversion time
+     * @throws IllegalStateException if {@link #isConverting()} is false.
+     */
+    public int getConversionTime();
+
+    /**
+     * Sets the amount of ticks until this entity will be converted to a Zoglin.
+     *
+     * When this reaches 0, the entity will be converted. A value of less than 0
+     * will stop the current conversion process without converting the current
+     * entity.
+     *
+     * @param time new conversion time
+     */
+    public void setConversionTime(int time);
+
+    /**
+     * Get if this entity is in the process of converting to a Zoglin.
+     *
+     * @return conversion status
+     */
+    boolean isConverting();
+}