fix(php-8.4): make implicit-nullable parameters explicit

PHP 8.4 deprecates 'Type $x = null' in favor of '?Type $x = null'.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: cb-freddysart

src/Cache/MemoryManager.php

@@ -25,7 +25,7 @@
 class MemoryManager extends CacheManager
 {
 
-    public function __construct(AbstractAdapter $adapter = null)
+    public function __construct(?AbstractAdapter $adapter = null)
     {
         if(null === $adapter) {
             $adapter = new MemoryAdapter();

src/Client.php

@@ -81,10 +81,10 @@ class Client
     public function __construct(
         string $token,
         string $organizationUrl,
-        HttpClient $httpClient = null,
+        ?HttpClient $httpClient = null,
         string $integrationUserAgent = null,
-        CacheManager $cacheManager = null,
-        AuthorizationMode $authorizationMode = null
+        ?CacheManager $cacheManager = null,
+        ?AuthorizationMode $authorizationMode = null
     ) {
         $this->token = $token;
         $this->organizationUrl = $organizationUrl;

src/DataStore/DefaultDataStore.php

@@ -89,7 +89,7 @@ class DefaultDataStore
      * @param HttpClient|NULL $httpClient
      * @param AuthorizationMode|NULL $authorizationMode
      */
-    public function __construct(string $token, string $organizationUrl, HttpClient $httpClient = null, AuthorizationMode $authorizationMode = null)
+    public function __construct(string $token, string $organizationUrl, ?HttpClient $httpClient = null, ?AuthorizationMode $authorizationMode = null)
     {
         $this->token = $token;
         $this->organizationUrl = $organizationUrl;
@@ -121,7 +121,7 @@ public function __construct(string $token, string $organizationUrl, HttpClient $
      * @param array          $options Any options you want to set.
      * @return object
      */
-    public function instantiate(string $class, \stdClass $properties = null, array $options = [])
+    public function instantiate(string $class, ?\stdClass $properties = null, array $options = [])
     {
         $propertiesArr = array($properties, $options);
 

src/Exceptions/ResourceException.php

@@ -23,7 +23,7 @@ class ResourceException extends GeneralException
 {
     private $error;
 
-    public function __construct(Error $error, Throwable $previous = null)
+    public function __construct(Error $error, ?Throwable $previous = null)
     {
         $this->error = $error;
         $message = $error->getErrorSummary() ?: '';

src/Okta.php

@@ -30,7 +30,7 @@ class Okta
 
     const VERSION = '1.3.0';
 
-    public function __construct(Client $client = null, DefaultDataStore $dataStore = null)
+    public function __construct(?Client $client = null, ?DefaultDataStore $dataStore = null)
     {
         $this->client = $client ?: Client::getInstance();
         $this->dataStore = $dataStore ?: $this->client->getDataStore();

src/Resource/AbstractResource.php

@@ -65,7 +65,7 @@ abstract class AbstractResource
      * @param \stdClass|NULL        $properties Properties for the resource.
      * @param array                 $options Options to use on the resource.
      */
-    public function __construct(DefaultDataStore $dataStore = null, \stdClass $properties = null, array $options = [])
+    public function __construct(?DefaultDataStore $dataStore = null, ?\stdClass $properties = null, array $options = [])
     {
         $this->dataStore = $dataStore ?: Client::getInstance()->getDataStore();
         $this->setProperties($properties);
@@ -90,7 +90,7 @@ public function getHref()
      * @param \stdClass|NULL $properties the properties to set.
      * @return self
      */
-    public function setProperties(\stdClass $properties = null): self
+    public function setProperties(?\stdClass $properties = null): self
     {
         $this->dirty = false;