if ( isInsert && columnNumber == 0 ) { columns.add( column.handle( getDesign( ) ), 0 ); return; }
	protected void pasteColumn( TableColumn column, int columnNumber,			boolean isInsert ) throws SemanticException	{		TableColumn targetColumn = null;		SlotHandle columns = getColumns( );		if ( columns.getCount( ) == 0 && column == null )			return;		if ( columns.getCount( ) == 0 && column != null )		{			addColumnHeader( column, columnNumber, isInsert );			return;		}		targetColumn = ColumnHelper.findColumn( getDesign( ),				columns.getSlot( ), columnNumber );		replaceColumn( column, targetColumn.handle( getDesign( ) ),				columnNumber, isInsert );	}