public static function getExtensionSignature(string $namespace, string $extensionKey, string $separator = '.'): string {
    return self::extensionSignature($namespace, $extensionKey, $separator);
  }
public static function getExtensionSignature(string $namespace, string $extensionKey, string $separator = '.'): string {
    return self::extensionSignature($namespace, $extensionKey, $separator);
  }
public static function getExtensionSignature ( string $ namespace , string $ extensionKey , string $ separator = '.' ) : string { return self :: extensionSignature ( $ namespace , $ extensionKey , $ separator ) ; }
Alias for the `extensionSignature` function.

@param string $namespace The namespace
@param string $extensionKey The extension key
@param string $separator The optional separator, defaults to `.`
@return string The extension signature
Alias for the extensionSignature function .