Cake\Http\ResponseEmitter::emitBody PHP Метод

    protected function emitBody(ResponseInterface $response, $maxBufferLength)
    {
        $body = $response->getBody();
        if (!$body->isSeekable()) {
            echo $body;
            return;
        }
        $body->rewind();
        while (!$body->eof()) {
            echo $body->read($maxBufferLength);
        }
    }