скорректирована структура

inc/lib/YandexIoT.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Rsgrinko\IotApi;
+
 class YandexIoT
 {
     private string $clientId;
@@ -28,7 +30,7 @@ class YandexIoT
             throw new RuntimeException('Файл для инициализации не найден');
         }
         $data = json_decode(file_get_contents($file), true, 512, JSON_THROW_ON_ERROR);
-        $this->accessToken  = $data['access_token'] ?? null;
+        $this->accessToken = $data['access_token'] ?? null;
         $this->refreshToken = $data['access_token'] ?? null;
         return $this;
     }
@@ -43,8 +45,12 @@ class YandexIoT
      * @return array
      * @throws JsonException
      */
-    public static function sendRequest(string $url, array $headers = [], ?array $data = null, ?string $method = null): array
-    {
+    public static function sendRequest(
+        string $url,
+        array $headers = [],
+        ?array $data = null,
+        ?string $method = null
+    ): array {
         $ch = curl_init();
         curl_setopt($ch, CURLOPT_URL, $url);