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/DataItemScriptExecutor.java
return;
			IDataItemEventHandler eh = getEventHandler( dataItemHandle, context );
			if ( eh != null )
				eh.onPrepare( dataItem, context.getReportContext( ) );
		} catch ( Exception e )
		{
			addException( context, e );
		}
	}
	public static void handleOnCreate( IDataContent content,
			ExecutionContext context )
	{
		try
		{
			ReportItemDesign dataItemDesign = ( ReportItemDesign ) content
					.getGenerateBy( );
			IDataItemInstance dataItem = new DataItemInstance( content, context );
			if ( handleJS( dataItem, dataItemDesign.getOnCreate( ), context )
					.didRun( ) )
				return;
			IDataItemEventHandler eh = getEventHandler( dataItemDesign, context );
			if ( eh != null )
				eh.onCreate( dataItem, context.getReportContext( ) );
		} catch ( Exception e )
		{
			addException( context, e );
		}
	}
	public static void handleOnRender( IDataContent content,
			ExecutionContext context )