docs: @Nonnull
  	public static <T1, T2> ToIntBiFunction<T1, T2> toIntBiFunctionFrom(Consumer<ToIntBiFunctionBuilder<T1, T2>> buildingFunction) {
  		ToIntBiFunctionBuilder builder = new ToIntBiFunctionBuilder();
  		buildingFunction.accept(builder);
  		return builder.build();
  	}