private static ChangeUserRoleViewModel GetUserRole(User user)
 {
     return new ChangeUserRoleViewModel
     {
         UserId = user.Id,
         Role = (int)user.Role
     };
 }
 private static ChangeUserDataViewModel GetUserData(User user)
 {
     return new ChangeUserDataViewModel
     {
         Id = user.Id,
         FirstName = user.FirstName,
         LastName = user.LastName,
         Login = user.Login,
         Phone = user.Phone
     };
 }
 private static ChangeAddressViewModel GetUserAddress(User user)
 {
     return new ChangeAddressViewModel
     {
         UserId = user.Id,
         City = user.Address.City,
         Street = user.Address.Street,
         HomeNumber = user.Address.HomeNumber,
         FlatNumber = user.Address.FlatNumber,
         PostCode = user.Address.PostCode
     };
 }