Add types to private and internal properties

Author: nicolas-grekas

Authenticator/Passport/Passport.php

@@ -33,7 +33,7 @@ class Passport
     private array $attributes = [];
 
     /**
-     * @param CredentialsInterface $credentials the credentials to check for this authentication, use
+     * @param CredentialsInterface $credentials The credentials to check for this authentication, use
      *                                          SelfValidatingPassport if no credentials should be checked
      * @param BadgeInterface[]     $badges
      */
@@ -48,7 +48,7 @@ public function __construct(UserBadge $userBadge, CredentialsInterface $credenti
 
     public function getUser(): UserInterface
     {
-        if (null === $this->user) {
+        if (!isset($this->user)) {
             if (!$this->hasBadge(UserBadge::class)) {
                 throw new \LogicException('Cannot get the Security user, no username or UserBadge configured for this passport.');
             }
@@ -66,9 +66,9 @@ public function getUser(): UserInterface
      * This method replaces the current badge if it is already set on this
      * passport.
      *
-     * @param string|null $badgeFqcn A FQCN to which the badge should be mapped to. 
-     *                                                        This allows replacing a built-in badge by a custom one using
-     *.                                                        e.g. addBadge(new MyCustomUserBadge(), UserBadge::class)
+     * @param string|null $badgeFqcn A FQCN to which the badge should be mapped to.
+     *                               This allows replacing a built-in badge by a custom one using
+     *.                              e.g. addBadge(new MyCustomUserBadge(), UserBadge::class)
      *
      * @return $this
      */