How to use the omi.cloneElement function in omi

renderTreeNode = (child, index, level = 0) => {
    const {
      keyEntities,
      expandedKeys = [], selectedKeys = [], halfCheckedKeys = [],
      loadedKeys = [], loadingKeys = [],
      dragOverNodeKey, dropPosition,
    } = this.data;

    const pos = getPosition(level, index);
    const key = child.key || pos;

    if (!keyEntities[key]) {
      warnOnlyTreeNode();
      return null;
    }
    const r = omi.cloneElement(child, {
      key,
      eventKey: key,
      expanded: expandedKeys.indexOf(key) !== -1,
      selected: selectedKeys.indexOf(key) !== -1,
      loaded: loadedKeys.indexOf(key) !== -1,
      loading: loadingKeys.indexOf(key) !== -1,
      checked: this.isKeyChecked(key),
      halfChecked: halfCheckedKeys.indexOf(key) !== -1,
      pos,

      // [Legacy] Drag props
      dragOver: dragOverNodeKey === key && dropPosition === 0,
      dragOverGapTop: dragOverNodeKey === key && dropPosition === -1,
      dragOverGapBottom: dragOverNodeKey === key && dropPosition === 1,
    });
    return r

render(props) {
    var a =  cloneElement(props.children[0], {
      onTouchStart: this._handleTouchStart,
      onTouchMove: this._handleTouchMove,
      onTouchCancel: this._handleTouchCancel,
      onTouchEnd: this._handleTouchEnd
    })
    return a
  }
}