public ProfileDto?AddTransactionToProfile(ITransactionModel transactionModel) { if ( string.IsNullOrEmpty(transactionModel.ProfileId) || string.IsNullOrEmpty(transactionModel.AccountId) ) { return(null); } var updated = _profilesService.AddToArray( transactionModel.AccountId, transactionModel.ToTransactionSubEntity() ); if (updated != null || !string.IsNullOrEmpty(updated?.Id)) { return(updated.ToProfileDto()); } return(null); }