public static function newFromPolicyAndHandle($policy_identifier, PhabricatorObjectHandle $handle = null)
 {
     $is_global = PhabricatorPolicyQuery::isGlobalPolicy($policy_identifier);
     if ($is_global) {
         return PhabricatorPolicyQuery::getGlobalPolicy($policy_identifier);
     }
     $policy = PhabricatorPolicyQuery::getObjectPolicy($policy_identifier);
     if ($policy) {
         return $policy;
     }
     if (!$handle) {
         throw new Exception(pht("Policy identifier is an object PHID ('%s'), but no object handle " . "was provided. A handle must be provided for object policies.", $policy_identifier));
     }
     $handle_phid = $handle->getPHID();
     if ($policy_identifier != $handle_phid) {
         throw new Exception(pht("Policy identifier is an object PHID ('%s'), but the provided " . "handle has a different PHID ('%s'). The handle must correspond " . "to the policy identifier.", $policy_identifier, $handle_phid));
     }
     $policy = id(new PhabricatorPolicy())->setPHID($policy_identifier)->setHref($handle->getURI());
     $phid_type = phid_get_type($policy_identifier);
     switch ($phid_type) {
         case PhabricatorProjectProjectPHIDType::TYPECONST:
             $policy->setType(PhabricatorPolicyType::TYPE_PROJECT);
             $policy->setName($handle->getName());
             break;
         case PhabricatorPeopleUserPHIDType::TYPECONST:
             $policy->setType(PhabricatorPolicyType::TYPE_USER);
             $policy->setName($handle->getFullName());
             break;
         case PhabricatorPolicyPHIDTypePolicy::TYPECONST:
             // TODO: This creates a weird handle-based version of a rule policy.
             // It behaves correctly, but can't be applied since it doesn't have
             // any rules. It is used to render transactions, and might need some
             // cleanup.
             break;
         default:
             $policy->setType(PhabricatorPolicyType::TYPE_MASKED);
             $policy->setName($handle->getFullName());
             break;
     }
     $policy->makeEphemeral();
     return $policy;
 }