Bug 183733 Implement the IScriptOjectClassInfo to provide the class infromation to support the JS code assistant.
Engine should implement the IScriptObjectClassInfo interface to return the class information for script object.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/script/internal/TableGroupScriptExecutor.java
} catch ( Exception e )
		{
			addException( context, e );
		}
	}
	private static ITableGroupEventHandler getEventHandler(
			TableGroupHandle handle, ExecutionContext context )
	{
		ITableGroupEventHandler eh = null;
		try
		{
			eh = ( ITableGroupEventHandler ) getInstance( handle, context );
		} catch ( ClassCastException e )
		{
			addClassCastException( context, e, handle.getEventHandlerClass( ),
					ITableGroupEventHandler.class );
		}
		return eh;
	}
	
	private static ITableGroupEventHandler getEventHandler( ReportItemDesign design,
			ExecutionContext context )
	{
		TableGroupHandle handle = ( TableGroupHandle ) design.getHandle( );
		if ( handle == null )
			return null;
		return getEventHandler( handle, context );
	}
}