private function createSignature(string $url, array $parameters): string
    {
        return 'giantbomb-'.\mb_substr(\sha1($this->buildQueryUrl($url, $parameters)), 0, 7);
    }
private function createSignature(string $url, array $parameters): string
    {
        return 'giantbomb-'.\mb_substr(\sha1($this->buildQueryUrl($url, $parameters)), 0, 7);
    }
private function createSignature ( string $ url , array $ parameters ) : string { return 'giantbomb-' . \ mb_substr ( \ sha1 ( $ this -> buildQueryUrl ( $ url , $ parameters ) ) , 0 , 7 ) ; }
Creates a signature for the given request.

@param string $url
@param array  $parameters

@return string
Creates a signature for the given request .