OData返回缺少的属性

Question

ASP.NET Core 2.2 OData（v7.1.0）返回的数据缺少用户定义的属性。我有一个人类，其中包含电话号码列表。 OData返回，但减去TelephoneType。

来自MongoDb的数据正确

{
    "_id" : ObjectId("5cef852944f1c9b5586851e7"),
    "PersonId" : "123",
    "Name" : "Alan",
    "Gender" : null,
    "TelNos" : [ 
        {
            "TelephoneType" : {
                "Type" : "Home"
            },
            "PhoneNumber" : "056328499"
        }, 
        {
            "TelephoneType" : {
                "Type" : "Mobile1"
            },
            "PhoneNumber" : "00953553955"
        }
    ]
}

public class TelephoneType
{
    public string Type {get;set;}
}

public class Telephone
{
    public TelephoneType PhoneType {get; set;}
    public string PhoneNumber {get; set;}
}

public class Person
{
    [Key]
    public string PersonId {get;set;}
    public string Name {get;set;}
    public string Gender {get;set;}
    public List<Telephone> TelNos {get; set;}
}


public static IEdmModel GetEdmModel(IServiceProvider serviceProvider)
{
    ODataModelBuilder builder = new ODataConventionModelBuilder(serviceProvider);
    builder.Namespace = "MyApp";

     builder.EntitySet<TelephoneType>("TelephoneType")
          .EntityType
          .Filter()
          .Count()
          .Expand()
          .OrderBy()
          .Page()
          .Select();

          builder.EntitySet<Person>("Person")
           .EntityType
          .Filter()
          .Count()
          .Expand()
          .OrderBy()
          .Page()
          .Select();
}

返回的数据：

{
    "@odata.context": "http://192.168.8.51:5020/v2/odata/$metadata#Patient",
    "value": [ 
        { "PersonId":"123", "Name": "Alan", "Gender":null,
          "TelNos": [ { "PhoneNumber":"056328499" }, { "PhoneNumber":"00953553955" } ]
        }
    ]
}