code: public static <T1, T2> Tuple2<T1, T2> of(T1 t1, T2 t2) {
  		return new Tuple2<>(t1, t2);
  	}
docs: Create a {@link Tuple2} with the given objects.
  
  @param t1   The first value in the tuple. Not null.
  @param t2   The second value in the tuple. Not null.
  @param <T1> The type of the first value.
  @param <T2> The type of the second value.
  @return The new {@link Tuple2}.