GetListByIdAsync returns empty Contacts (with only "Id" set)

[MFrattaruolo]

Hi,
I need to get a Contact list with their ID.
I solved the problem using this code:

var clientList = new HubSpotListOfContactsClient("XXX-XXXX-XXXXX");
var listResult = await clientList.GetListByIdAsync<ContactListHubSpotEntity<ContactHubSpotEntity>>(123, new ListOfContactsRequestOptions { NumberOfContactsToReturn = 50 });

In the result all the Contacts (ContactHubSpotEntity) present in the list I searched for appear correctly but these Contacts are empty except for the ID field.
In order to get the remaining Contacts data I am forced to make a further call (GetByIdAsync) for each ID obtained.

Is it possible to have all the Contacts data directly called GetListByIdAsync?

Thank you in advance and I am waiting for your reply.

With best regards
Michele