Incomplete JSON output is returned when querying navigation property that has at least one complex property.

Incomplete JSON output is returned when querying navigation property that has at least one complex property.

To reproduce the problem use ODataDynamicModel sample.

1. In MyDataSource.cs, add EdmComplexType property to DetailInfo entity.
2. Add some value to this complex property in CreateDetailInfo()

Now run this query :
http://localhost:4527/odata/mydatasource/Products(1)/DetailInfo

Note that output is truncated and does not include complex property of DetailInfo :

{"@odata.context":"http://localhost:4527/odata/mydatasource/$metadata#Products/ns.DetailInfo/$entity","ID":88,"Title":"abc_detailinfo" <no results after this>

I see this exception in debug:

_Microsoft.OData.ODataException
HResult=0x80131509
Message=The type 'ns.DetailInfo' does not inherit from and is not a base type of 'ns.Product'. The type of 'KeySegments' must be related to the Type of the EntitySet.
Source=Microsoft.OData.Core
StackTrace:
at Microsoft.OData.UriParser.ExceptionUtil.ThrowIfTypesUnrelated(IEdmType type, IEdmType secondType, String segmentName)
at Microsoft.OData.UriParser.KeySegment..ctor(IEnumerable1 keys, IEdmEntityType edmType, IEdmNavigationSource navigationSource) at Microsoft.OData.UriParser.ODataPathExtensions.AddKeySegment(ODataPath path, IEnumerable1 keys, IEdmEntityType edmType, IEdmNavigationSource navigationSource)
at Microsoft.OData.ODataWriterCore.AppendEntitySetKeySegment(ODataPath odataPath, Boolean throwIfFail)
at Microsoft.OData.ODataWriterCore.EnterScope(WriterState newState, ODataItem item)
at Microsoft.OData.ODataWriterCore.WriteStartNestedResourceInfoImplementation(ODataNestedResourceInfo nestedResourceInfo)
at Microsoft.OData.ODataWriterCore.<>c__DisplayClass65_0.b__0()
at Microsoft.OData.TaskUtils.GetTaskForSynchronousOperation(Action synchronousOperation)
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.OData.Formatter.Serialization.ODataResourceSerializer.d__19.MoveNext() in D:\githubrepos\AspNetCoreOData\src\Microsoft.AspNetCore.OData\Formatter\Serialization\ODataResourceSerializer.cs:line 839

This exception was originally thrown at this call stack:
[External Code]
Microsoft.AspNetCore.OData.Formatter.Serialization.ODataResourceSerializer.WriteComplexPropertiesAsync(Microsoft.AspNetCore.OData.Formatter.Serialization.SelectExpandNode, Microsoft.AspNetCore.OData.Formatter.ResourceContext, Microsoft.OData.ODataWriter) in ODataResourceSerializer.cs_

Note: Complex type works when expanding the navigation property.