PaperMC/paper-server/patches/sources/net/minecraft/world/entity/Shearable.java.patch

--- a/net/minecraft/world/entity/Shearable.java
+++ b/net/minecraft/world/entity/Shearable.java
@@ -5,7 +_,16 @@
 import net.minecraft.world.item.ItemStack;
 
 public interface Shearable {
+    default void shear(ServerLevel level, SoundSource soundSource, ItemStack shears, java.util.List<net.minecraft.world.item.ItemStack> drops) { this.shear(level, soundSource, shears); } // Paper - Add drops to shear events
     void shear(ServerLevel level, SoundSource soundSource, ItemStack shears);
 
     boolean readyForShearing();
+
+    net.minecraft.world.level.Level level(); // Shearable API - expose default level needed for shearing.
+
+    // Paper start - custom shear drops; ensure all implementing entities override this
+    default java.util.List<net.minecraft.world.item.ItemStack> generateDefaultDrops(final ServerLevel serverLevel, final ItemStack shears) {
+        return java.util.Collections.emptyList();
+    }
+    // Paper end - custom shear drops
 }