docs: function (elementId, containerId) {
              var container = this.$containers[containerId];
              if (!container) {
                  // TODO: remove this shit
                  container = this.createContainer({'class': containerId + "-container"});
                  this.$containers[containerId] = container;
                  this.addChild(container);
                  if (this.$containerOrder[containerId]) {
                      container.setChildIndex(this.$containerOrder[containerId]);
                  }
              }
  
              var element = this.$elements[containerId + "_" + elementId];
              if (!element) {
                  element = this.createContainer({});
                  container.addChild(element);
              }
  
              return element.$el;
          }