<?php  namespace App\Services\SMS;  use App\Services\Support\BaseApiHandler;  class ElksHandler extends BaseApiHandler { 	/** 	 * @var string 	 */ 	final public const API_URL = 'https://api.46elks.com/a1/';  	public function __construct(?string $username = null, ?string $password = null){}  	public function sms(array $data): ?array{} }