public static String openExchangeFileName(ChessEngine engine){
  String ret="";
  if (engine.getPackageName() != null)   ret+=sanitizeString(engine.getPackageName());
  ret+="-";
  if (engine.getFileName() != null)   ret+=sanitizeString(engine.getFileName());
  return ret;
}

public static String openExchangeFileName ( ChessEngine engine ) { String ret = "" ; if ( engine . getPackageName ( ) != null ) ret += sanitizeString ( engine . getPackageName ( ) ) ; ret += "-" ; if ( engine . getFileName ( ) != null ) ret += sanitizeString ( engine . getFileName ( ) ) ; return ret ; }
return a filename ( without path ) representing an open exchange engine .
