analysis: fix issues

src/Services/ApiClient.php

@@ -36,20 +36,22 @@ public function __construct($username, $privateKey, $baseUri = 'https://tp.tax.g
         $this->encryptor = new EncryptionService();
         $this->response = new Response();
     }
+
     /**
      * Sends a packet to the API server.
      *
-     * @param Packet $packet The packet to send.
-     * @return mixed The response from the API server.
+     * @return Response The response from the API server.
      */
     public function sendRequest(Request $request): Response
     {
         if ($request->needToken) {
             $this->addToken($request);
         }
+
         if ($request->getPacket()->needEncrypt) {
             $this->encryptPacket($request->getPacket());
         }
+
         $request = $this->signRequest($request);
 
         $httpResp = $this->httpClient->post($request->getPacket()->path, [
@@ -88,8 +90,7 @@ public function getToken()
     /**
      * Signs a packet with a digital signature.
      *
-     * @param Packet $packet The packet to sign.
-     * @return void
+     * @return Request
      */
     private function signRequest(Request $request)
     {
@@ -111,7 +112,8 @@ private function signRequest(Request $request)
      * Encrypts a packet with a symmetric encryption algorithm.
      *
      * @param Packet $packet The packet to encrypt.
-     * @return void
+     *
+     * @return Packet
      */
     private function encryptPacket(Packet $packet)
     {

src/Services/SignatureService.php

@@ -45,7 +45,7 @@ public static function normalizer(array $data, array $headers): string
             if ($value === '' || $value === null) {
                 $value = '#';
             } else {
-                strtr($value, [ '#' => '##']);
+                $value = strtr($value, [ '#' => '##']);
             }
 
             $normalizedData[] = $value;