public boolean isRslUrlSigned(String url){
  if (url == null) {
    return false;
  }
  return url.endsWith(SIGNED_RSL_URL_DOT_EXTENSION);
}

public boolean isRslUrlSigned ( String url ) { if ( url == null ) { return false ; } return url . endsWith ( SIGNED_RSL_URL_DOT_EXTENSION ) ; }
test is the url is signed .
