AttendeeType.cs

public class AttendeeType : ObjectType<Attendee>
{
        protected override void Configure(IObjectTypeDescriptor<Attendee> descriptor)
        {
            descriptor
                .ImplementsNode()
                .IdField(t => t.Id)
                .ResolveNode((ctx, id) => ctx.DataLoader<AttendeeByIdDataLoader>().LoadAsync(id, ctx.RequestAborted));

            descriptor
                .Field(t => t.SessionsAttendees)
                .ResolveWith<AttendeeResolvers>(t => t.GetSessionsAsync(default!, default!, default!, default))
                .Name("sessions");
        }
}