public AccountController(
     IHttpQueryHandler <GetAccountIntent, Account> getAccountQueryHandler,
     IHttpCommandHandler <CreateAccountIntent, Account> createAccountCommandHandler)
 {
     _getAccountQueryHandler      = getAccountQueryHandler;
     _createAccountCommandHandler = createAccountCommandHandler;
 }
 public TransactionController(
     IHttpQueryHandler <GetTransactionIntent, Transaction> getTransactionQueryHandler,
     IHttpCommandHandler <SubmitTransactionIntent, Transaction> submitTransactionCommandHandler,
     IHttpCommandHandler <ValidateTransactionIntent, Account> validateTransactionCommandHandler
     )
 {
     _submitTransactionCommandHandler   = submitTransactionCommandHandler;
     _validateTransactionCommandHandler = validateTransactionCommandHandler;
     _getTransactionQueryHandler        = getTransactionQueryHandler;
 }