POST /api/things/file/
PATCH /api/things/file/int:pk/
DELETE /api/things/file/int:pk/
GET /api/things/files/
GET /api/things/files/int:pk/
PUT /api/things/files/
[
{
"id": 1,
"filename": "abc.png"
},
{
"id": 2,
"filename": "abcdef.png"
},
{
"id": 3,
"filename": "zxp.png"
}
]