code: public byte[] popByteArray() throws ParseException
      {
          final Object popped = super.pop();
          if (popped instanceof byte[])
              return (byte[]) popped;
  
          throw new ParseException("byte[] required, found " + popped.getClass().getSimpleName(), 0);
      }
docs: <p>
  popByteArray.
  </p>
  
  @return an array of byte.
  @throws java.text.ParseException if any.