private function normalizeUri(string $base, string $uri) : string
    {
        $full = $base . $uri;

        if (empty($full)) {
            return '';
        }

        $full = preg_replace('#/+#', '/', $full);

        return $full[0] === '/' ? $full : '/' . $full;
    }
private function normalizeUri(string $base, string $uri) : string
    {
        $full = $base . $uri;

        if (empty($full)) {
            return '';
        }

        $full = preg_replace('#/+#', '/', $full);

        return $full[0] === '/' ? $full : '/' . $full;
    }
@param string $base
@param string $uri

@return string