public Guid GetUserIdByName(string tenantName, string username)
{
if (string.IsNullOrEmpty(tenantName))
{
throw new ArgumentNullException("tenantName");
}
if (string.IsNullOrEmpty(username))
{
throw new ArgumentNullException("username");
}
return(AuthenticationLogic.GetUserIdByName(tenantName, username));
}