public async Task <Unit> Handle(RegisterMerchantCommand request, CancellationToken cancellationToken)
{
var merchant = Merchant.Register(request.MerchantName);
var merchantUser = MerchantUser.CreateRegisteredOnNewRegister(merchant.Code, merchant.Name, request.FirstName, request.LastName, request.Email,
request.Phone, request.Password.AsMd5(), new List <string> {
"account-admin"
}, _merchantUserUniquenessChecker);
await _merchantUserRepository.CreateAsync(merchantUser);
await _merchantRepository.CreateAsync(merchant);
return(Unit.Task.Result);
}