App permission on SharePoint Folder not displayed, only users and groups

Question

Hi All,

I'm struggling to get 'app permissions' returned on a specific item within a document library via the graph api.

the api I'm calling is:

drives/{drive-id}/items/{item-id}/permissions

but it only seems to include user / group permissions and not include an app specific permission I in theory just set using the below

{
    "id": "1",
    "roles": [
        "read"
    ],
    "grantedTo": {
        "application": {
            "displayName": "My App(Dev)",
            "id": "My App ID"
        }
    }
} 

Setting the permission returned a 200 response code and a generated 'id' for the permission set.

If I'm calling the wrong api and someone could point me in the right direction that would be really appreciated, documentation as well would be great.

Cheers