SPIGOT-3629: Greatly expand entity effect API

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

@@ -436,9 +436,14 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
         return entity;
     }
 
+    @Override
     public void playEffect(EntityEffect type) {
+        Preconditions.checkArgument(type != null, "type");
+
+        if (this.getClass().isAssignableFrom(type.getApplicable())) {
             this.getHandle().world.broadcastEntityEffect(getHandle(), type.getData());
         }
+    }
 
     public void setHandle(final Entity entity) {
         this.entity = entity;