Add types to private and final methods.

Author: derrabus

Authorization/AccessDecisionManager.php

@@ -66,7 +66,7 @@ public function decide(TokenInterface $token, array $attributes, $object = null)
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideAffirmative(TokenInterface $token, array $attributes, $object = null)
+    private function decideAffirmative(TokenInterface $token, array $attributes, $object = null): bool
     {
         $deny = 0;
         foreach ($this->voters as $voter) {
@@ -106,7 +106,7 @@ private function decideAffirmative(TokenInterface $token, array $attributes, $ob
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideConsensus(TokenInterface $token, array $attributes, $object = null)
+    private function decideConsensus(TokenInterface $token, array $attributes, $object = null): bool
     {
         $grant = 0;
         $deny = 0;
@@ -147,7 +147,7 @@ private function decideConsensus(TokenInterface $token, array $attributes, $obje
      * If all voters abstained from voting, the decision will be based on the
      * allowIfAllAbstainDecisions property value (defaults to false).
      */
-    private function decideUnanimous(TokenInterface $token, array $attributes, $object = null)
+    private function decideUnanimous(TokenInterface $token, array $attributes, $object = null): bool
     {
         $grant = 0;
         foreach ($this->voters as $voter) {