public async Task <UserDetail> Handle(CreateUserCommand request, CancellationToken cancellationToken)
{
var retrievedUser = await _userReadRepository.GetUserByEmailAsync(request?._User?.EmailAddress);
if (retrievedUser != null)
{
throw new BadRequestException($"User with email address {request?._User?.EmailAddress} already exists.");
}
var userEntity = _mapper.Map <User, UserEntity>(request._User);
userEntity.UserId = Guid.NewGuid();
await _userWriteRepository.CreateUserAsync(userEntity);
return(_mapper.Map <UserEntity, UserDetail>(userEntity));
}