/** Cosntructor - pass in reference to a TransformerImpl object */
  public TransformerHandlerImpl(TransformerImpl transformer) {
    // Save the reference to the transformer
    _transformer = transformer;

    if (transformer.isIdentity()) {
      // Set initial handler to the empty handler
      _handler = new DefaultHandler();
      _isIdentity = true;
    } else {
      // Get a reference to the translet wrapped inside the transformer
      _translet = _transformer.getTranslet();
    }
  }