code: public String rewriteName(String name, Tag currentTag)
              throws ExpressionEvaluationException
      {
          ExpressionEvaluator eval = ExpressionEvaluatorFactory.getInstance();
  
          try {
              if (!eval.isExpression(name))
                  return eval.qualify("actionForm", name);
              return name;
          }
          catch (Exception e) {
              if (logger.isErrorEnabled())
                  logger.error("Could not qualify name \"" + name + "\" into the actionForm binding context.", e);
  
              // return the Struts name.  This should cause regular Struts databinding to execute so this property will
              // be updated anyway.
              return name;
          }
      }
docs: Qualify the name of a NetUI JSP tag into the "actionForm" data binding context.
  This feature is used to convert non-expression tag names, as those used in Struts,
  into actionForm expressions that NetUI consumes.
  @param name the name to qualify into the actionForm binding context.  If this is "foo", the returned value
  is {actionForm.foo}
  @return the qualified name or <code>null</code> if an error occurred