code: function() {
          var me = this,
              data = null,
              val;
          if (!me.disabled && me.submitValue && !me.isFileUpload()) {
              val = me.getSubmitValue();
              if (val !== null) {
                  data = {};
                  data[me.getName()] = val;
              }
          }
          return data;
      }
docs: private override to use getSubmitValue() as a convenience