JacobBennett\Http2ServerPush\Middleware\AddHttp2ServerPush::handle PHP Method

    public function handle(Request $request, Closure $next)
    {
        $response = $next($request);
        if ($response->isRedirection() || !$response instanceof Response || $request->isJson()) {
            return $response;
        }
        $this->generateAndAttachLinkHeaders($response);
        return $response;
    }