docs: public String memberTagValue(Properties attributes) throws XDocletException
      {
          if (getCurrentField() != null) {
              // setting field to true will override the for_class value.
              attributes.setProperty("field", "true");
              return getExpandedDelimitedTagValue(attributes, FOR_FIELD);
          }
          else if (getCurrentMethod() != null) {
              return getExpandedDelimitedTagValue(attributes, FOR_METHOD);
          }
          else {
              return null;
          }
      }