FireworkEffectBuilder extends Builder<FireworkEffectMeta, FireworkEffectBuilder> { public FireworkEffectBuilder effect(FireworkEffect effect) { meta.setEffect(effect); return this; } FireworkEffectBuilder();   FireworkEffectBuilder(Builder<ItemMeta, ?> source); static FireworkEffectBuilder of(); FireworkEffectBuilder effect(FireworkEffect effect);  }
@Test void effect() { FireworkEffectBuilder.of().self().effect(effect); verify(meta).setEffect(effect); }