
    <nz-tree-virtual-scroll-view class="virtual-scroll-tree" [nzTreeControl]="treeControl" [nzDataSource]="dataSource">
      <nz-tree-node *nzTreeNodeDef="let node" nzTreeNodePadding>
        <nz-tree-node-toggle nzTreeNodeNoopToggle></nz-tree-node-toggle>
        {{ node.name }}
      </nz-tree-node>

      <nz-tree-node *nzTreeNodeDef="let node; when: hasChild" nzTreeNodePadding>
        <nz-tree-node-toggle>
          <nz-icon nzType="caret-down" nzTreeNodeToggleRotateIcon />
        </nz-tree-node-toggle>
        {{ node.name }}
      </nz-tree-node>
    </nz-tree-virtual-scroll-view>
  