Get AssignmentFolder

{
    "data": {
        "id": "FID001",
        "type": "AssignmentFolder",
        "attributes": {
            "name": "string"
        },
        "relationships": {
            "assignment": {
                "data": {
                    "id": "FID001",
                    "type": "Assignment"
                }
            },
            "items": {
                "data": [
                    {
                        "id": "FID001",
                        "type": "AssignmentItemAudio"
                    }
                ]
            },
            "coverImage": {
                "data": {
                    "id": "FID001",
                    "type": "File"
                }
            }
        }
    }
}