Airship\Engine\Lens::sendStandardHeaders PHP Method

    public function sendStandardHeaders(string $mimeType)
    {
        $state = State::instance();
        \header('Content-Type: ' . $mimeType);
        \header('Content-Language: ' . $state->lang);
        \header('X-Content-Type-Options: nosniff');
        \header('X-Frame-Options: SAMEORIGIN');
        // Maybe make this configurable down the line?
        \header('X-XSS-Protection: 1; mode=block');
        if (isset($state->HPKP) && $state->HPKP instanceof HPKPBuilder) {
            $state->HPKP->sendHPKPHeader();
        }
        if (isset($state->CSP) && $state->CSP instanceof CSPBuilder) {
            $state->CSP->sendCSPHeader();
        }
    }