code: @NotNull
      public static Stream<Integer> rangeClosed(final int from, final int to) {
          return IntStream.rangeClosed(from, to).boxed();
      }
docs: Creates a {@code Stream<Integer>} from closed range
  (from {@code from} inclusive to {@code to} inclusive and incremental step {@code 1}).
  
  @param from  the initial value (inclusive)
  @param to  the upper bound (inclusive)
  @return the new stream
  @see IntStream#rangeClosed(int, int)