@SuppressWarnings({"unchecked","rawtypes"}) private void initColumns(){
  columns.clear();
  final ArrayList<ColumnId> columnOrder=getColumnOrderFromConfig();
  columnOrder.forEach(null);
}

@ SuppressWarnings ( { "unchecked" , "rawtypes" } ) private void initColumns ( ) { columns . clear ( ) ; final ArrayList < ColumnId > columnOrder = getColumnOrderFromConfig ( ) ; columnOrder . forEach ( null ) ; }
initialize the columns in the grid view .
