public function sendSmsWithVonage(string $to, string $body, ?string $from = null): SmsMessage;  	public function sendSmsWithTwilio(string $to, string $body, ?string $from = null): SmsMessage;  	public function sendSmsWithInfoBip(string $to, string $body, ?string $from = null): SmsMessage;  	public function sendSmsWithNth(string $to, string $body, ?string $from = null): SmsMessage;  	public function sendSmsWithElks(string $to, string $body, ?string $from = null): SmsMessage; }