<Tree showLine={{ showLeafIcon: false }} defaultExpandedKeys={['0-0-0']}>
        <TreeNode title="parent 1" key="0-0">
          <TreeNode title="parent 1-0" key="0-0-0">
            <TreeNode title="leaf" key="0-0-0-0" />
            <TreeNode title="leaf" key="0-0-0-1" />