&& cell.getColumnInstance( ).hasDataItemsInDetail( )
&& columnInstance.hasDataItemsInDetail( )
	private boolean needColumnFilter( ICellContent cell )	{		DetailRowState state = (DetailRowState) detailRowStateStack.peek( );		if ( cell.getColumnInstance( ) == null )		{			return false;		}		return state.isStartOfDetail				&& cell.getColumnInstance( ).hasDataItemsInDetail( )				&& displayFilterIcon				&& HTMLUtil.getFilterConditions( cell ).size( ) > 0;	}