code: function _ensureVisibleSequence(viewSequence, next) {
          this._scroll.scrollToSequence = undefined;
          this._scroll.scrollToRenderNode = undefined;
          this._scroll.ensureVisibleRenderNode = viewSequence.get();
          this._scroll.scrollToDirection = next;
          this._scroll.scrollDirty = true;
      }
docs: Helper function that scrolls the view towards a view-sequence node.