public void ValidateOptions() { ClientId.ThrowConfigurationExceptionIfNull($"{Position}:{ClientId}"); Secret.ThrowConfigurationExceptionIfNull($"{Position}:{Secret}"); AuthUrl.ThrowConfigurationExceptionIfNull($"{Position}:{AuthUrl}"); EmailUrl.ThrowConfigurationExceptionIfNull($"{Position}:{EmailUrl}"); SenderEmail.ThrowConfigurationExceptionIfNull($"{Position}:{SenderEmail}"); SenderName.ThrowConfigurationExceptionIfNull($"{Position}:{SenderName}"); }