Payum\Paypal\ExpressCheckout\Nvp\Action\CancelAction::supports PHP Method

    public function supports($request)
    {
        return $request instanceof Cancel && $request->getModel() instanceof \ArrayAccess;
    }

 /**
  * @test
  */
 public function shouldNotSupportAnythingNotCancelRequest()
 {
     $action = new CancelAction();
     $this->assertFalse($action->supports(new \stdClass()));
 }