mock-redfish-server/mockup/redfish/v1/Managers/1/EthernetInterfaces/index.json

{
    "@odata.type": "#EthernetInterfaceCollection.EthernetInterfaceCollection",
    "Name": "Ethernet Network Interface Collection",
    "@odata.context": "/redfish/v1/$metadata#EthernetInterfaceCollection.EthernetInterfaceCollection",
    "Members": [
        {
            "@odata.id": "/redfish/v1/Managers/1/EthernetInterfaces/1"
        }
    ],
    "Description": "a Collection of Manager Ethernet Interfaces",
    "@odata.id": "/redfish/v1/Managers/1/EthernetInterfaces",
    "Members@odata.count": 1
}