/**
  * @copydoc PKPHandler::authorize()
  */
 function authorize($request, &$args, $roleAssignments)
 {
     $stageId = (int) $request->getUserVar('stageId');
     // Authorize stage id.
     import('lib.pkp.classes.security.authorization.internal.WorkflowStageRequiredPolicy');
     $this->addPolicy(new WorkflowStageRequiredPolicy($stageId));
     // We need a review round id in request.
     import('lib.pkp.classes.security.authorization.internal.ReviewRoundRequiredPolicy');
     $this->addPolicy(new ReviewRoundRequiredPolicy($request, $args));
     return parent::authorize($request, $args, $roleAssignments);
 }