定义用例优先级前的块为用例的目录，如下图所示
第一个用例目录是：testcase-template.xlsx-充电桩测试 - 通信模块测试 - 心跳测试
第二个用例目录是：testcase-template.xlsx-充电桩测试 - 通信模块测试 - 控制直连测试
第三个用例目录是：testcase-template.xlsx-充电桩测试 - 传呼模块测试 - 设备测试
用例目前只有最高到四层，如果更多层怎么保证获取到的目录是正确的
JSON 数据格式如下：
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"data": {"created": 1666753139902, "text": "testcase-template.xlsx", "id": "c9fca96a-f4ca-4c73-8d89-6b63784b85e8"},
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"children": [{"data": {"created": 1666753139963, "text": "通信模块测试",
"id": "1d77eac3-4029-4761-9eee-9bad06b2ec79"}, "children": [{"data": {
"created": 1666753139964, "text": "心跳测试", "id": "4d3d471e-cfee-4b7d-ad65-f6cd94512d2d",
"expandState": "expand"}, "children": [{"data": {
"note": "创建人: tester1\n用例描述: 充电桩与上层云平台心跳为5s，测试功能\n备注: \n用例是否自动化自动化: 否\n用例关联接口: \n用例测试类型: 功能测试\n用例关联项目: 充电桩一期\n",
"resource": ["心跳"], "created": 1666753139964, "text": "心跳时长测试",
"id": "02728e92-0ad8-44c1-9fc4-87d52e2daf35", "priority": 1}, "children": [{"data": {
"resource": ["前置条件"], "created": 1666753139964, "text": "充电桩与云平台建立连接",
"id": "65813894-fb87-462e-97b5-b9b3be814724"}, "children": [{"data": {"resource": ["执行步骤"],
"created": 1666753139964,
"text": "1.云平台发起心跳，有预期结果1",
"id": "61d4ad36-df7e-4fcf-bf8e-cb5a2fe8fe77",
"expandState": "expand"},
"children": [{"data": {
"id": "f7111115-3282-44b2-baf7-29c088fea495",
"created": 1666753139964,
"resource": ["预期结果"],
"text": "1.充电桩1s内返回响应"},
"children": []}]}, {
"data": {"id": "cpj8wpoy7iw0",
"created": 1672819178746,
"text": "2.充电桩发起心跳，有预期结果2",
"resource": ["执行步骤"]},
"children": [{"data": {
"id": "cpj8wz4u9ls0",
"created": 1672819199298,
"text": "2.云平台2s内返回响应",
"resource": ["预期结果"]},
"children": []}]}]},
{"data": {
"id": "cpj944ucgm00",
"created": 1672819760273,
"text": "充电前置条件2",
"expandState": "expand",
"resource": [
"前置条件"]},
"children": [{
"data": {
"id": "cpj8x6no50g0",
"created": 1672819215674,
"text": "3.充电桩发起心跳，有预期结果2",
"resource": [
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"children": [
{
"data": {
"id": "cpj8xff7pcw0",
"created": 1672819234753,
"text": "3.云平台3s内返回响应",
"resource": [
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{"data": {
"created": 1666753139964,
"text": "控制直连测试",
"id": "1ff3276a-1d6e-437b-a285-e643bf8a6fc4"},
"children": [{
"data": {
"note": "创建人: tester2\n用例描述: \n备注: 关注101指令数据\n用例是否自动化自动化: 是\n用例关联接口: /api/charge\n用例测试类型: 可靠性测试\n用例关联项目: 充电桩三期\n",
"resource": [
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"created": 1666753139964,
"text": "启动充电功能测试",
"id": "8e7e7164-32d3-4f99-955d-4a74bed28032",
"priority": 2},
"children": [
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"data": {
"resource": [
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"created": 1666753139964,
"text": "充电桩与云平台建立连接",
"id": "516803bb-ad71-4e9a-b2fc-c1bba61d8cc4"},
"children": [
{
"data": {
"resource": [
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"created": 1666753139964,
"text": "1.充电桩启动充电，有预期结果1",
"id": "12779ceb-bbb2-4f09-8cd3-5985563cc053"},
"children": [
{
"data": {
"resource": [
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"created": 1666753139964,
"text": "1.充电成功，开始计费",
"id": "6a3115f5-ac97-4df0-8903-96042906b270"},
"children": []}]},
{
"data": {
"id": "cpj8xunme8o0",
"created": 1672819267913,
"text": "2.充电桩启动充电，有预期结果2",
"resource": [
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"children": [
{
"data": {
"id": "cpj8y1sabkw0",
"created": 1672819283433,
"text": "2.充电失败，不计费",
"resource": [
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"children": []}]}]}]}]}]},
{"data": {"id": "cpjafnmqt7k0", "created": 1672823484288, "text": "传呼模块测试"},
"children": [{"data": {"id": "cpjag2og9sw0", "created": 1672823517043, "text": "设备测试"},
"children": [{"data": {"id": "cpjaggd5sog0", "created": 1672823546835,
"text": "顶部分层", "priority": 1}, "children": [{
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"created": 1672823681634,
"text": "步骤",
"resource": [
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"children": [
{
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"created": 1672823698106,
"text": "结果",
"resource": [
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