item = ( (GroupHandle) item ).getContainer( );
return EMPTY;
	public String[] getChoiceSet( Object item, String key )	{		if ( key.equals( FilterCondition.OPERATOR_MEMBER ) )		{			choiceSet = ChoiceSetFactory.getStructChoiceSet( FilterCondition.FILTER_COND_STRUCT,					key );			return ChoiceSetFactory.getDisplayNamefromChoiceSet( choiceSet );		}		if ( item instanceof GroupHandle )		{			item = ( (GroupHandle) item ).getContainer( );		}		if ( !( item instanceof ReportItemHandle ) )			return EMPTY;		return getDataSetColumns( (ReportItemHandle) item );	}