code: public static <A, B> Pair<A, B> pair(
      final A left,
      final B right)
    {
      return new Pair<A, B>(left, right);
    }
docs: Return a new pair {@code (left, right)}.
  
  @param <A>   The type of left values.
  @param <B>   The type of right values.
  @param left  The left value
  @param right The right value
  
  @return A new pair