Apply fixes from StyleCI (#25)

Co-authored-by: StyleCI Bot <[email protected]>

Author: olsgreen

src/AbstractClient.php

@@ -21,7 +21,7 @@ abstract class AbstractClient
      * @param array                $options
      * @param ClientInterface|null $http
      */
-    public function __construct(array $options = [], ClientInterface $http = null)
+    public function __construct(array $options = [], ?ClientInterface $http = null)
     {
         $this->http = $http ?? new GuzzleClient();
 

src/Api/Builders/LookupRequestBuilder.php

@@ -16,7 +16,7 @@ class LookupRequestBuilder extends AbstractBuilder implements BuilderInterface
     protected $registration;
 
     /**
-     * VIN
+     * VIN.
      *
      * @var string
      */

src/Api/Exceptions/BadRequestException.php

@@ -10,7 +10,7 @@ class BadRequestException extends ClientException
 {
     protected array $warnings = [];
 
-    public function __construct(string $message, Request $request, Response $response = null, \Exception $previous = null)
+    public function __construct(string $message, Request $request, ?Response $response = null, ?\Exception $previous = null)
     {
         if ($response) {
             $body = json_decode($response->getBody(), true);

src/Api/Exceptions/DuplicateStockException.php

@@ -21,7 +21,7 @@ class DuplicateStockException extends ClientException
      * @param Response|null   $response
      * @param \Exception|null $previous
      */
-    public function __construct(string $message, Request $request, Response $response = null, \Exception $previous = null)
+    public function __construct(string $message, Request $request, ?Response $response = null, ?\Exception $previous = null)
     {
         if ($response) {
             $this->duplicateStockId = $this->parseStockIdFromBody(

src/Api/Taxonomy.php

@@ -126,7 +126,7 @@ public function features(string $advertiserId, string $derivativeId, string $eff
      *
      * @return array
      */
-    public function prices(string $advertiserId, string $derivativeId, string $effectiveDate = null)
+    public function prices(string $advertiserId, string $derivativeId, ?string $effectiveDate = null)
     {
         $options = ['derivativeId' => $derivativeId, 'advertiserId' => $advertiserId];
 

src/Http/AccessToken.php

@@ -47,7 +47,7 @@ public function getExpiresAt(): DateTime
     public function toArray(): array
     {
         return [
-            'access_token' => $this->access_token,
+            'access_token'    => $this->access_token,
             'expires_at'      => $this->getExpiresAt()
                 ->format(DateTime::ATOM),
             /**

src/Http/Exceptions/HttpException.php

@@ -20,8 +20,8 @@ class HttpException extends \Exception
     public function __construct(
         string $message,
         RequestInterface $request,
-        ResponseInterface $response = null,
-        \Exception $previous = null
+        ?ResponseInterface $response = null,
+        ?\Exception $previous = null
     ) {
         // Set the code of the exception if the response is set and not future.
         $code = $response ? $response->getStatusCode() : 0;

src/Http/GuzzleClient.php

@@ -36,7 +36,7 @@ class GuzzleClient extends AbstractClient implements ClientInterface
      *
      * @param GuzzleClientInterface|null $guzzle
      */
-    public function __construct(GuzzleClientInterface $guzzle = null)
+    public function __construct(?GuzzleClientInterface $guzzle = null)
     {
         if (!$guzzle) {
             $guzzle = new Client();

src/Http/SimpleMultipartBody.php

@@ -26,7 +26,7 @@ class SimpleMultipartBody
      *
      * @return SimpleMultipartBody
      */
-    public function add(string $name, $contents, string $filename = null, array $headers = []): SimpleMultipartBody
+    public function add(string $name, $contents, ?string $filename = null, array $headers = []): SimpleMultipartBody
     {
         $element = [
             'name'     => $name,