src/Neutrino/Middleware/Throttle.php
public function after(Event $event, $source, $data = null)
    {
        $this->addHeader($this->resolveRequestSignature(), false);

        return true;
    }
public function after(Event $event, $source, $data = null)
    {
        $this->addHeader($this->resolveRequestSignature(), false);

        return true;
    }
Called after the execution of handler

@param \Phalcon\Events\Event|mixed $event
@param \Phalcon\Dispatcher|mixed   $source
@param mixed|null                  $data

@throws \Exception
@return bool