public function applies(Request $request) {
    $username = $request->headers->get('PHP_AUTH_USER');
    $password = $request->headers->get('PHP_AUTH_PW');
    return isset($username) && isset($password);
}

public function applies(Request $request) {
    return false;
    //$username = $request->headers->get('PHP_AUTH_USER');
    //$password = $request->headers->get('PHP_AUTH_PW');
    //return isset($username) && isset($password);
}