/// <summary>
/// Gets the valid entity of type T
/// </summary>
/// <param name="counter">The counter.</param>
/// <returns>A valid entity of type T</returns>
protected override Attachment GetValid(int?counter)
{
var rtValue = CreateValidEntities.Attachment(counter);
rtValue.User = UserRepository.Queryable.Single(a => a.Id == "2");
return(rtValue);
}
