public Set<String> getGroupIds( String parentGroupId )
    {
        Set<String> result = new TreeSet<String>();
        for ( int i = 0; i < stores.length; i++ )
        {
            Set<String> groupIds = stores[i].getGroupIds( parentGroupId );
            if ( groupIds != null )
            {
                result.addAll( groupIds );
            }
        }
        return result;
    }
public Set < String > getGroupIds ( String parentGroupId ) { Set < String > result = new TreeSet < String > ( ) ; for ( int i = 0 ; i < stores . length ; i ++ ) { Set < String > groupIds = stores [ i ] . getGroupIds ( parentGroupId ) ; if ( groupIds != null ) { result . addAll ( groupIds ) ; } } return result ; }
{@inheritDoc}