[Documentation][Voter] Added the GitHub code for the Voter.php file to the documentation.

security/voters.rst

@@ -35,15 +35,44 @@ The Voter Interface
 -------------------
 
 A custom voter needs to implement
-:class:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\VoterInterface`
+:class:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\VoterInterface`, :class:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\CacheableVoterInterface`
 or extend :class:`Symfony\\Component\\Security\\Core\\Authorization\\Voter\\Voter`,
 which makes creating a voter even easier::
 
     use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
     use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;
 
-    abstract class Voter implements VoterInterface
+    abstract class Voter implements VoterInterface, CacheableVoterInterface
     {
+        public function vote(TokenInterface $token, mixed $subject, array $attributes): int
+        {
+            // abstain vote by default in case none of the attributes are supported
+            $vote = self::ACCESS_ABSTAIN;
+
+            foreach ($attributes as $attribute) {
+                try {
+                    if (!$this->supports($attribute, $subject)) {
+                        continue;
+                    }
+                } catch (\TypeError $e) {
+                    if (str_contains($e->getMessage(), 'supports(): Argument #1')) {
+                        continue;
+                    }
+
+                    throw $e;
+                }
+
+                // as soon as at least one attribute is supported, default is to deny access
+                $vote = self::ACCESS_DENIED;
+
+                if ($this->voteOnAttribute($attribute, $subject, $token)) {
+                    // grant access as soon as at least one attribute returns a positive response
+                    return self::ACCESS_GRANTED;
+                }
+            }
+
+            return $vote;
+        }
         abstract protected function supports(string $attribute, mixed $subject): bool;
         abstract protected function voteOnAttribute(string $attribute, mixed $subject, TokenInterface $token): bool;
     }