Package net.fabricmc.fabric.api.client.rendereregistry.v1

Interface LivingEntityFeatureRendererRegistrationCallback

Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface @Environment(CLIENT) public interface LivingEntityFeatureRendererRegistrationCallback
Called when feature renderers for a living entity renderer are registered.

Feature renderers are typically used for rendering additional objects on an entity, such as armor, an elytra or Deadmau5's ears. This callback lets developers add additional feature renderers for use in entity rendering. Listeners should filter out the specific entity renderer they want to hook into, usually through instanceof checks or filtering by entity type. Once listeners find a suitable entity renderer, they should register their feature renderer via the registration helper.

For example, to register a feature renderer for a player model, the example below may used: 

 LivingEntityFeatureRendererRegistrationCallback.EVENT.register((entityType, entityRenderer, registrationHelper) -> {
        if (entityRenderer instanceof PlayerEntityModel) {
                registrationHelper.register(new MyFeatureRenderer((PlayerEntityModel) entityRenderer));
        }
 });