"Identity" complex type missing "email" as a Property in XML

We use the v1.0 metadata XML to autogenerate all types for our Graph API usages in golang.
Querying a DriveItem returns an email field in LastModifiedBy and CreatedBy fields (user below) but the same is not being captured by the XML metadata. Can we get it updated for v1.0?
Graph explorer

GET v1.0 https://graph.microsoft.com/v1.0/me/drive/root/children

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#Collection(driveItem)",
    "value": [
        {
            "createdBy": {
                "user": {
                    "email": "MeganB@M365x214355.onmicrosoft.com",
                    "id": "48d31887-5fad-4d73-a9f5-3c356e68a038",
                    "displayName": "Megan Bowen"
                }
            },
            "createdDateTime": "2017-07-31T18:56:29Z",
            "eTag": "\"{60F36ED0-85CE-4771-B349-E671C691EFCA},1\"",
            "id": "01BYE5RZ6QN3ZWBTUFOFD3GSPGOHDJD36K",
            "lastModifiedBy": {
                "user": {
                    "email": "MeganB@M365x214355.onmicrosoft.com",
                    "id": "48d31887-5fad-4d73-a9f5-3c356e68a038",
                    "displayName": "Megan Bowen"
                }
            },
            "lastModifiedDateTime": "2017-07-31T18:56:29Z",
            "name": "Attachments",
            "parentReference": {
                "driveType": "business",
                "driveId": "b!-RIj2DuyvEyV1T4NlOaMHk8XkS_I8MdFlUCq1BlcjgmhRfAj3-Z8RY2VpuvV_tpd",
                "id": "01BYE5RZ56Y2GOVW7725BZO354PWSELRRZ",
                "name": "Documents",
                "path": "/drive/root:",
                "siteId": "d82312f9-b23b-4cbc-95d5-3e0d94e68c1e"
            },
            "webUrl": "https://m365x214355-my.sharepoint.com/personal/meganb_m365x214355_onmicrosoft_com/Documents/Attachments",
            "cTag": "\"c:{60F36ED0-85CE-4771-B349-E671C691EFCA},0\"",
            "fileSystemInfo": {
                "createdDateTime": "2017-07-31T18:56:29Z",
                "lastModifiedDateTime": "2017-07-31T18:56:29Z"
            },
            "folder": {
                "childCount": 0
            },
            "size": 0,
            "specialFolder": {
                "name": "attachments"
            }
        },

Start with the v1.0 metadata exposed through the Graph Explorer request and inspect the Identity complex type used by DriveItem's createdBy and lastModifiedBy fields. Compare it with the shown response; done when the v1.0 XML metadata includes email as a property of that type.