How to populate REST API data in ngx-admin Treeview table with checkbox option in each row

### How to populate API data in ngx-admin Treeview table with checkbox option in each row.

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* [ X] feature request
* [ ] question about the decisions made in the repository

### Issue description
Dear, could you please help me to populate API data in ngx-admin Treeview table with checkbox option in each row.

Here is my data which I am getting from API

[{
"displayName": "",
"order": 1,
"status": "Active",
"description": "Application Top Section",
"createDate": "2020-01-01 12:00:00",
"parentId": 0,
"modifiedDate": "2020-01-01 12:00:00",
"id": 0,
"type": "section"
}, {
"displayName": "",
"order": 1,
"status": "Active",
"description": "Application Side Navigation Section",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 1,
"type": "section"
}, {
"displayName": "Puente Dashboard",
"order": 1,
"status": "Active",
"description": "Application Dashboard",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 2,
"type": "link"
}, {
"displayName": "Security",
"order": 2,
"status": "Active",
"description": "Security Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 3,
"type": "link"
}, {
"displayName": "User",
"order": 1,
"status": "Active",
"description": "User Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 4,
"type": "link"
}, {
"displayName": "Role",
"order": 2,
"status": "Active",
"description": "Role Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 5,
"type": "link"
}, {
"displayName": "Widget",
"order": 3,
"status": "Active",
"description": "Widget Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 6,
"type": "link"
}]

**Current behavior:**

**Expected behavior:**

Dear, could you please help me to populate API data in ngx-admin Treeview table with checkbox option in each row.

Here is my data which I am getting from API

[{
"displayName": "",
"order": 1,
"status": "Active",
"description": "Application Top Section",
"createDate": "2020-01-01 12:00:00",
"parentId": 0,
"modifiedDate": "2020-01-01 12:00:00",
"id": 0,
"type": "section"
}, {
"displayName": "",
"order": 1,
"status": "Active",
"description": "Application Side Navigation Section",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 1,
"type": "section"
}, {
"displayName": "Puente Dashboard",
"order": 1,
"status": "Active",
"description": "Application Dashboard",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 2,
"type": "link"
}, {
"displayName": "Security",
"order": 2,
"status": "Active",
"description": "Security Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 1,
"modifiedDate": "2020-01-01 12:00:00",
"id": 3,
"type": "link"
}, {
"displayName": "User",
"order": 1,
"status": "Active",
"description": "User Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 4,
"type": "link"
}, {
"displayName": "Role",
"order": 2,
"status": "Active",
"description": "Role Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 5,
"type": "link"
}, {
"displayName": "Widget",
"order": 3,
"status": "Active",
"description": "Widget Management",
"createDate": "2020-01-01 12:00:00",
"parentId": 3,
"modifiedDate": "2020-01-01 12:00:00",
"id": 6,
"type": "link"
}]

**Steps to reproduce:**

**Related code:**

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### Other information:

**npm, node, OS, Browser**
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**Angular, Nebular**
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