code: @Nonnull
  	public <V extends T> LConsumerBuilder<T> casesOf(Class<V> argC, Consumer<LConsumerBuilder<V>> pcpConsumer) {
  		PartialCase.The pc = partialCaseFactoryMethod(a -> (argC == null || argC.isInstance(a)));
  
  		pc.specifySubCases((Consumer) pcpConsumer);
  		return self();
  	}
docs: Allows to specify additional cases for a specific type of generic arguments (matched by instanceOf). Null classes can be provided in case of arguments that do not matter.