code: function _contextSet(contextNodeOrId, set) {
          var contextNode = this._nodesById ? _contextGet.call(this, contextNodeOrId) : contextNodeOrId;
          if (contextNode) {
              var node = contextNode.node;
              if (!node) {
                  if (contextNode.next) {
                       if (contextNode.index < this._contextState.nextSetIndex) {
                          LayoutUtility.error('Nodes must be layed out in the same order as they were requested!');
                       }
                       this._contextState.nextSetIndex = contextNode.index;
                  }
                  else if (contextNode.prev) {
                       if (contextNode.index > this._contextState.prevSetIndex) {
                          LayoutUtility.error('Nodes must be layed out in the same order as they were requested!');
                       }
                       this._contextState.prevSetIndex = contextNode.index;
                  }
                  node = _contextGetCreateAndOrderNodes.call(this, contextNode.renderNode, contextNode.prev);
                  node._viewSequence = contextNode.viewSequence;
                  node._layoutCount++;
                  if (node._layoutCount === 1) {
                      this._contextState.addCount++;
                  }
                  contextNode.node = node;
              }
              node.usesTrueSize = contextNode.usesTrueSize;
              node.trueSizeRequested = contextNode.trueSizeRequested;
              node.set(set, this._context.size);
              contextNode.set = set;
          }
          return set;
      }
docs: Set the node content