public function serveStaticFile($staticFilePath, $sitePath, $siteName, $uri)
    {
        /**
         * Back story...
         *
         * PHP docs *claim* you can set default_mimetype = "" to disable the default
         * Content-Type header. This works in PHP 7+, but in PHP 5.* it sends an
         * *empty* Content-Type header, which is significantly different than
         * sending *no* Content-Type header.
         *
         * However, if you explicitly set a Content-Type header, then explicitly
         * remove that Content-Type header, PHP seems to not re-add the default.
         *
         * I have a hard time believing this is by design and not coincidence.
         *
         * Burn. it. all.
         */
        header('Content-Type: text/html');
        header_remove('Content-Type');

        header('X-Accel-Redirect: /' . VALET_STATIC_PREFIX . $staticFilePath);
    }