code: function _innerRender() {
          var specs = this._specs;
          for (var i3 = 0, j3 = specs.length; i3 < j3; i3++) {
              if (specs[i3].renderNode) {
                  specs[i3].target = specs[i3].renderNode.render();
              }
          }
  
          // Add our cleanup-registration id also to the list, so that the
          // cleanup function is called by famo.us when the LayoutController is
          // removed from the render-tree.
          if (!specs.length || (specs[specs.length-1] !== this._cleanupRegistration)) {
              specs.push(this._cleanupRegistration);
          }
          return specs;
      }
docs: Inner render function of the Group