private Object evaluateExpression(
ExpressionString attribute, JadeModel model, ExpressionHandler expressionHandler)
throws ExpressionException {
String expression = ((ExpressionString) attribute).getValue();
Object result = expressionHandler.evaluateExpression(expression, model);
if (result instanceof ExpressionString) {
return evaluateExpression((ExpressionString) result, model, expressionHandler);
}
return result;
}