String drop = (String) cell.getLocalProperty( null, Cell.DROP_PROP );
String drop = (String) cell.getLocalProperty( null, ICellModel.DROP_PROP );
	private void resolveDropForCell( Cell cell, int rowId, int groupLevel,			LayoutRow layoutRow )	{		String drop = (String) cell.getLocalProperty( null, Cell.DROP_PROP );		if ( drop == null				|| DesignChoiceConstants.DROP_TYPE_NONE.equalsIgnoreCase( drop ) )			return;		int colId = layoutRow.findCellColumnPos( cell ) - 1;		LayoutCell original = layoutRow.getLayoutCell( colId );		if ( !original.isCellStartPosition( ) )			return;		int colSpan = cell.getColSpan( layoutTable.getModule( ) );		List layoutSlots = getSpanSlots( groupLevel, colId, colSpan, drop );		updateUsedLayoutCell( layoutRow, colId, cell, layoutSlots );		updateSpannedLayoutCell( layoutSlots, cell, colId, original.getCellId( ) );	}