Apply type changes

Author: Jean85

src/Tracing/Cache/TraceableCacheAdapterForV2.php

@@ -40,7 +40,7 @@ public function __construct(HubInterface $hub, AdapterInterface $decoratedAdapte
      *
      * @return mixed
      */
-    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null): mixed
     {
         return $this->traceFunction('cache.get_item', function () use ($key, $callback, $beta, &$metadata) {
             if (!$this->decoratedAdapter instanceof CacheInterface) {

src/Tracing/Cache/TraceableTagAwareCacheAdapterForV2.php

@@ -41,7 +41,7 @@ public function __construct(HubInterface $hub, TagAwareAdapterInterface $decorat
      *
      * @return mixed
      */
-    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
+    public function get(string $key, callable $callback, float $beta = null, array &$metadata = null): mixed
     {
         return $this->traceFunction('cache.get_item', function () use ($key, $callback, $beta, &$metadata) {
             if (!$this->decoratedAdapter instanceof CacheInterface) {

tests/EventListener/Fixtures/UserWithoutIdentifierStub.php

@@ -31,4 +31,9 @@ public function getSalt(): ?string
     public function eraseCredentials(): void
     {
     }
+
+    public function getUserIdentifier(): string
+    {
+        return $this->getUsername();
+    }
 }