protected List<String> convertListToLowerCase(List<String> list){
  List<String> lowerCaseList=new ArrayList<>();
  for (  String value : list) {
    lowerCaseList.add(value.toLowerCase());
  }
  return lowerCaseList;
}

protected List < String > convertListToLowerCase ( List < String > list ) { List < String > lowerCaseList = new ArrayList < > ( ) ; for ( String value : list ) { lowerCaseList . add ( value . toLowerCase ( ) ) ; } return lowerCaseList ; }
converts all of the members in this list to lower case .
