public function mergeHttpStatus($code, $text)
    {
        $code = $this->filterStatusCode($code);
        $text = $this->filterReasonPhrase($text);
        if ($this->hasReasonPhrase($text) && $this->getStatusCode($text) !== $code) {
            throw new RuntimeException('The submitted reason phrase is already present in the collection');
        }

        $this->httpStatus[$code] = $text;
    }