Explicit nullable type added with PHP 8.4 support

src/Client/AdobeStock.php

@@ -79,7 +79,7 @@ class AdobeStock
      * @param string        $target_env  Target Environment Prod/Stage
      * @param HttpInterface $http_client Custom http client
      */
-    public function __construct(string $api_key, string $product, string $target_env, HttpInterface $http_client = null)
+    public function __construct(string $api_key, string $product, string $target_env, ?HttpInterface $http_client = null)
     {
         $this->_config = new CoreConfig($api_key, $product, $target_env);
         $this->_search_category_factory = new SearchCategoryFactory($this->_config);
@@ -143,7 +143,7 @@ public function searchCategoryTree(SearchCategoryRequest $request, string $acces
      * @return FilesResponse
      * @throws StockApiException
      */
-    public function getFiles(FilesRequest $request, string $access_token = null) : FilesResponse
+    public function getFiles(FilesRequest $request, ?string $access_token = null) : FilesResponse
     {
         return $this->_files_factory->getFiles($request, $this->_http_client, $access_token);
     }
@@ -154,7 +154,7 @@ public function getFiles(FilesRequest $request, string $access_token = null) : F
      * @param string             $access_token
      * @return AdobeStock
      */
-    public function searchFilesInitialize(SearchFilesRequest $request, string $access_token = null) : AdobeStock
+    public function searchFilesInitialize(SearchFilesRequest $request, ?string $access_token = null) : AdobeStock
     {
         $this->_search_files_factory->searchFilesInitialize($request, $access_token, $this->_http_client, true);
         return $this;
@@ -331,7 +331,7 @@ public function downloadAssetStream(LicenseRequest $request, string $access_toke
      * @param string                $access_token Access token
      * @return AdobeStock
      */
-    public function initializeLicenseHistory(LicenseHistoryRequest $request, string $access_token = null) : AdobeStock
+    public function initializeLicenseHistory(LicenseHistoryRequest $request, ?string $access_token = null) : AdobeStock
     {
         $this->_license_history_factory->initializeLicenseHistory($request, $access_token, $this->_http_client);
         return $this;

src/Client/Files.php

@@ -45,7 +45,7 @@ public function __construct(CoreConfig $config)
     public function getFiles(
         FilesRequest $file_request,
         HttpClientInterface $http_client,
-        string $access_token = null
+        ?string $access_token = null
     ) : FilesResponse {
         $this->_validateRequest($file_request, $access_token);
         $response_json = $http_client->doGet(
@@ -64,7 +64,7 @@ public function getFiles(
      * @param string $access_token
      * @throws StockApiException
      */
-    private function _validateRequest(FilesRequest $request, string $access_token = null) : void
+    private function _validateRequest(FilesRequest $request, ?string $access_token = null) : void
     {
         if (!empty($request->getResultColumns())) {
             if (in_array('is_licensed', $request->getResultColumns()) && $access_token === null) {

src/Client/Http/HttpClient.php

@@ -27,7 +27,7 @@ class HttpClient implements HttpInterface
      * Constructor
      * @param Client $client GuzzleClient
      */
-    public function __construct(Client $client = null)
+    public function __construct(?Client $client = null)
     {
         if ($client === null) {
             $client = new Client();

src/Client/License.php

@@ -60,7 +60,7 @@ protected function _getDownloadUrl(): string
      * @param string $url
      * @param string $access_token
      */
-    protected function _setDownloadUrl(string $url, string $access_token = null)
+    protected function _setDownloadUrl(string $url, ?string $access_token = null)
     {
         if ($access_token) {
             $url .= '?token=' . $access_token;