/**
  * This is the default Policy voter, it votes for the access privilege for the given resource
  *
  * @param \TYPO3\Flow\Security\Context $securityContext The current security context
  * @param string $resource The resource to vote for
  * @return integer One of: VOTE_GRANT, VOTE_ABSTAIN, VOTE_DENY
  */
 public function voteForResource(\TYPO3\Flow\Security\Context $securityContext, $resource)
 {
     $accessGrants = 0;
     $accessDenies = 0;
     foreach ($securityContext->getRoles() as $role) {
         try {
             $privilege = $this->policyService->getPrivilegeForResource($role, $resource);
         } catch (\TYPO3\Flow\Security\Exception\NoEntryInPolicyException $e) {
             return self::VOTE_ABSTAIN;
         }
         if ($privilege === NULL) {
             continue;
         }
         if ($privilege === \TYPO3\Flow\Security\Policy\PolicyService::PRIVILEGE_GRANT) {
             $accessGrants++;
         } elseif ($privilege === \TYPO3\Flow\Security\Policy\PolicyService::PRIVILEGE_DENY) {
             $accessDenies++;
         }
     }
     if ($accessDenies > 0) {
         return self::VOTE_DENY;
     }
     if ($accessGrants > 0) {
         return self::VOTE_GRANT;
     }
     return self::VOTE_ABSTAIN;
 }