Method clone

packages/react-aria/src/focus/FocusScope.tsx:1092–1098

()

  }

  clone(): Tree {
    let newTree = new Tree();
    for (let node of this.traverse()) {
      newTree.addTreeNode(node.scopeRef, node.parent?.scopeRef ?? null, node.nodeToRestore);
    }
    return newTree;
  }
}

class TreeNode {