code: function () {
              // cancel any sort operation
              if (this.pendingSort) {
                  clearTimeout(this.pendingSort);
                  this.pendingSort = null;
              }
  
              // delete all children
              for (var i = this.children.length, obj; i >= 0; (obj = this.children[--i])) {
                  // don't remove it if a persistent object
                  if (obj && !obj.isPersistent) {
                      this.removeChildNow(obj);
                  }
              }
  
              if (typeof this.currentTransform !== "undefined") {
                  // just reset some variables
                  this.currentTransform.identity();
              }
          }
docs: reset the container, removing all childrens, and reseting transforms.
  @name reset
  @memberOf me.Container
  @function