/// <summary>
/// find and returns user by id
/// </summary>
/// <param name="userId"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <AppUser> FindByIdAsync(string userId, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
AppUser appUser = await _userGateway.FindByIdAsync(userId, cancellationToken);
if (appUser != null)
{
return(appUser);
}
return(null);
}
