/// <summary>
/// Adds an external <see cref="T:Microsoft.AspNetCore.Identity.UserLoginInfo" /> to the specified <paramref name="user" />.
/// </summary>
/// <param name="user">The user to add the login to.</param>
/// <param name="login">The external <see cref="T:Microsoft.AspNetCore.Identity.UserLoginInfo" /> to add to the specified <paramref name="user" />.</param>
/// <param name="cancellationToken">The <see cref="T:System.Threading.CancellationToken" /> used to propagate notifications that the operation should be canceled.</param>
/// <returns>
/// The <see cref="T:System.Threading.Tasks.Task" /> that represents the asynchronous operation.
/// </returns>
public async Task AddLoginAsync(User user, UserLoginInfo login, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
user.ThrowIfArgumentIsNull(nameof(user));
login.ThrowIfArgumentIsNull(nameof(login));
var mapper = _mapperProvider.GetMapper <UserLoginInfo, UserLogin>();
var userLogin = mapper.Map(login);
userLogin.UserId = user.Id;
_unitOfWork.GetRepository <UserLogin>().Add(userLogin);
await _unitOfWork.SaveChanges(cancellationToken);
}
