code: private void parseReverceStep() {
  
          AbsAxis axis;
          if (mToken.getType() == TokenType.PARENT) {
              axis = parseAbbrevReverseStep();
  
              mPipeBuilder.addStep(axis);
          } else {
              axis = parseReverceAxis();
              final AbsFilter filter = parseNodeTest(axis.getClass() == AttributeAxis.class);
              mPipeBuilder.addStep(axis, filter);
          }
      }
docs: Parses the the rule ReverceStep according to the following production
  rule:
  <p>
  [32] ReverseStep ::= (ReverseAxis NodeTest) | AbbrevReverseStep .
  </p>