PHPStan level 7

src/RequestTypes/AuthorizationRequest.php

@@ -60,7 +60,7 @@ class AuthorizationRequest
     /**
      * The state parameter on the authorization request
      *
-     * @var string
+     * @var string|null
      */
     protected $state;
 
@@ -175,7 +175,7 @@ class AuthorizationRequest
     }
 
     /**
-     * @return string
+     * @return string|null
      */
     public function getState()
     {
@@ -183,7 +183,7 @@ class AuthorizationRequest
     }
 
     /**
-     * @param string $state
+     * @param string|null $state
      */
     public function setState($state)
     {