code: function _getViewSpec(item, view, id, callback) {
          if (!item.view) {
              return;
          }
          var spec = view.getSpec(id);
          if (spec && !spec.trueSizeRequested) {
              callback(spec);
          }
          else {
              Timer.after(_getViewSpec.bind(this, item, view, id, callback), 1);
          }
      }
docs: Gets the spec from a spec.