mock-redfish-server/mockup/redfish/v1/AccountService/Roles/index.json

{
    "@odata.type": "#RoleCollection.RoleCollection",
    "Name": "Roles Collection",
    "@odata.context": "/redfish/v1/$metadata#RoleCollection.RoleCollection",
    "Members": [
        {
            "@odata.id": "/redfish/v1/AccountService/Roles/1"
        },
        {
            "@odata.id": "/redfish/v1/AccountService/Roles/2"
        },
        {
            "@odata.id": "/redfish/v1/AccountService/Roles/3"
        }
    ],
    "@odata.id": "/redfish/v1/AccountService/Roles",
    "Members@odata.count": 3
}