code: function (string, obj, instOf) {
          if (string instanceof instOf) {
              return string;
          }
          if (string === true && obj instanceof instOf) {
              return obj;
          }
          if (!obj) { return null; }
          obj = obj.get(string);
          if (obj instanceof instOf) {
              return obj;
          }
          return null;
      }
docs: ------------------------ Local utility functions Utility function to help find submodels and sub collections in _setupSubViewConfig