Bug 130094 [regression] cannot edit group in Cheat Sheets
steps to reproduce: - create a report using Grouped Listing template - switch to Cheat Sheets, start/restart the tutorial - follow the steps to 1) create data source; 2) create data set; 3) bind the data to the table; and 4) edit the group expected behavior: - group dialog should be displayed actual behavior: - error message displayed. please refer to the attached image for detail
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/views/DefaultNodeProvider.java
{
			List supportList = DEUtil.getElementSupportList( slotHandle );
			if ( supportList.size( ) == 1 )
			{
				type = ( (IElementDefn) supportList.get( 0 ) ).getName( );
			}
			else
			{
				NewSectionDialog dialog = new NewSectionDialog( PlatformUI.getWorkbench( )
						.getDisplay( )
						.getActiveShell( ),
						supportList );
				if ( dialog.open( ) == Dialog.CANCEL )
				{
					return null;
				}
				type = (String) dialog.getResult( )[0];
			}
		}
		return createElement( type );
	}
	protected boolean performInsert( Object model, SlotHandle slotHandle,
			String type, String position, Map extendData ) throws Exception
	{
		DesignElementHandle elementHandle = createElement( slotHandle, type );
		if ( extendData != null )
		{
			extendData.put( IRequestConstants.REQUEST_KEY_RESULT, elementHandle );
		}
		if ( elementHandle == null )