code: public Object popStringOrByteArray() throws ParseException
      {
          final Object popped = super.pop();
          if (popped instanceof String)
              return popped;
          /*
           * This is probably an unquoted single word literal.
           */
          if (popped instanceof TokVariable)
              return ((TokVariable) popped).getName();
  
          if (popped instanceof byte[])
              return popped;
  
          throw new ParseException("Literal or byte[] required, found " + popped.getClass().getSimpleName(), 0);
      }
docs: <p>
  popStringOrByteArray.
  </p>
  
  @return a {@link java.lang.Object} object.
  @throws java.text.ParseException if any.