Code example for TransformerException

  public Object callFunction(
      String funcName, Vector args, Object methodKey,
      ExpressionContext exprContext) throws TransformerException
    throw new TransformerException("This method should not be called.");
   * Execute the EXSLT function and return the result value. 
   * @param extFunction The XPath extension function 
   * @param args The arguments of the function call. 
   * @param exprContext The context in which this expression is being executed. 
   * @return the return value of the function evaluation. 
   * @throws TransformerException 
  public Object callFunction(FuncExtFunction extFunction,
                             Vector args,
                             ExpressionContext exprContext)