code: public Integer[] sequence(final Integer from, final Integer to, final Integer step) {
          return NumberUtils.sequence(from, to, step);
      }
docs: <p>
  Produces an array with a sequence of integer numbers, using the
  specified step.
  </p>
  
  @param from value to start the sequence from
  @param to value to produce the sequence to
  @param step the step to be used
  @return the Integer[] sequence
  
  @since 2.0.9