// app/models/server-item.js
export default DS.Model.extend({
    hostName: DS.attr('string'),
    syncServers: DS.hasMany('string'),
    subscribers: DS.hasMany('string'),
    mailHost: DS.attr('string'),
    mailHostLogin: DS.hasMany('credentials')
});
// app/models/credentials.js
export default DS.Model.extend({
    user: DS.attr('string'),
    password: DS.attr('string'),
    server: DS.belongsTo('serverItem')
});

"serverItems": [
    {
        "id": 1,
        "hostName": "foo",
        "syncServers": [
            <stringids>
        ],
        "subscribers": [
            <stringids>
        ],
        "mailHost": "foo",
        "mailHostLogin": [
            <Credentialsids>
        ]
    }
],
"credentials": [
    {
        "id": 1,
        "user": "foo",
        "password": "foo",
        "server": <ServerItemid>
    }
]

"serverItems": [
    {
        "id": 1,
        "host_name": "foo",
        "sync_server_ids": [
            <stringids>
        ],
        "subscriber_ids": [
            <stringids>
        ],
        "mail_host": "foo",
        "mail_host_login_ids": [
            <Credentialsids>
        ]
    }
],
"credentials": [
    {
        "id": 1,
        "user": "foo",
        "password": "foo",
        "server_id": <ServerItemid>
    }
]

{
    "data": {
        "type": "server-items",
        "id": "1",
        "attributes": {
            "HostName": "foo",
            "MailHost": "foo",
        },
        "relationships": {
            "SyncServers": {
                "data": {
                    "type": "SyncServers",
                    "id": <SyncServersid>
                }
            },
            "Subscribers": {
                "data": {
                    "type": "Subscribers",
                    "id": <Subscribersid>
                }
            },
            "MailHostLogin": {
                "data": {
                    "type": "MailHostLogin",
                    "id": <MailHostLoginid>
                }
            }
        },
        "included": [
            {
                <sideloadedrelationships>
            ]
        }
    }
}
{
    "data": {
        "type": "credentials",
        "id": "1",
        "attributes": {
            "User": "foo",
            "Password": "foo",
        },
        "relationships": {
            "Server": {
                "data": {
                    "type": "Server",
                    "id": <Serverid>
                }
            }
        },
        "included": [
            {
                <sideloadedrelationships>
            ]
        }
    }
}