Implementation of interface to modify the pumpkin head "derp mode" of a snowman

src/main/java/org/bukkit/craftbukkit/entity/CraftSnowman.java

@@ -10,6 +10,16 @@ public class CraftSnowman extends CraftGolem implements Snowman {
         super(server, entity);
     }
 
+    @Override
+    public boolean isDerp() {
+        return getHandle().o(); // PAIL: Rename
+    }
+
+    @Override
+    public void setDerp(boolean derpMode) {
+        getHandle().a(derpMode); // PAIL: Rename
+    }
+
     @Override
     public EntitySnowman getHandle() {
         return (EntitySnowman) entity;