PaperMC/paper-server/nms-patches/net/minecraft/world/entity/monster/EntitySilverfish.patch

--- a/net/minecraft/world/entity/monster/EntitySilverfish.java
+++ b/net/minecraft/world/entity/monster/EntitySilverfish.java
@@ -46,7 +46,7 @@
         this.goalSelector.a(3, this.friendsGoal);
         this.goalSelector.a(4, new PathfinderGoalMeleeAttack(this, 1.0D, false));
         this.goalSelector.a(5, new EntitySilverfish.PathfinderGoalSilverfishHideInBlock(this));
-        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[0])).a());
+        this.targetSelector.a(1, (new PathfinderGoalHurtByTarget(this, new Class[0])).a(new Class[0])); // CraftBukkit - decompile error
         this.targetSelector.a(2, new PathfinderGoalNearestAttackableTarget<>(this, EntityHuman.class, true));
     }
 
@@ -171,6 +171,11 @@
                             Block block = iblockdata.getBlock();
 
                             if (block instanceof BlockMonsterEggs) {
+                                // CraftBukkit start
+                                if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(this.silverfish, blockposition1, net.minecraft.world.level.block.Blocks.AIR.getBlockData()).isCancelled()) {
+                                    continue;
+                                }
+                                // CraftBukkit end
                                 if (world.getGameRules().getBoolean(GameRules.RULE_MOBGRIEFING)) {
                                     world.a(blockposition1, true, this.silverfish);
                                 } else {
@@ -239,6 +244,11 @@
                 IBlockData iblockdata = world.getType(blockposition);
 
                 if (BlockMonsterEggs.h(iblockdata)) {
+                    // CraftBukkit start
+                    if (org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(this.mob, blockposition, BlockMonsterEggs.n(iblockdata)).isCancelled()) {
+                        return;
+                    }
+                    // CraftBukkit end
                     world.setTypeAndData(blockposition, BlockMonsterEggs.n(iblockdata), 3);
                     this.mob.doSpawnEffect();
                     this.mob.die();