public void clearValueSources(){
  for (  ValueSource valueSource : valueSourceList) {
    valueSource.removeAllListeners();
  }
  valueSourceList.clear();
  setAutoLabelIfEnabled();
  fireCleared();
}

public void clearValueSources ( ) { for ( ValueSource valueSource : valueSourceList ) { valueSource . removeAllListeners ( ) ; } valueSourceList . clear ( ) ; setAutoLabelIfEnabled ( ) ; fireCleared ( ) ; }
unsubscripes all listeners from value sources and clears value source list afterwards .
