public async Task <TUser> FindByLoginAsync(string loginProvider, string providerKey, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(loginProvider))
{
throw new ArgumentNullException(nameof(loginProvider));
}
if (string.IsNullOrEmpty(providerKey))
{
throw new ArgumentNullException(nameof(providerKey));
}
TUserKey userId = userLoginTable.FindByProviderAndKey(loginProvider, providerKey);
return(await userTable.GetUserById(userId, cancellationToken) as TUser);
}
