public CreateAccountOperation Build()
 {
     CreateAccountOperation operation =
         new CreateAccountOperation(Destination, StartingBalance);
     if (SourceAccount != null)
     {
         operation.SourceAccount = SourceAccount;
     }
     return operation;
 }
            public CreateAccountOperation Build()
            {
                CreateAccountOperation operation =
                    new CreateAccountOperation(Destination, StartingBalance);

                if (SourceAccount != null)
                {
                    operation.SourceAccount = SourceAccount;
                }
                return(operation);
            }