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
if ( eh != null )
				eh.onPageBreak( dataItem, context.getReportContext( ) );
		} catch ( Exception e )
		{
			addException( context, e );
		}
	}
	private static IDataItemEventHandler getEventHandler(
			ReportItemDesign design, ExecutionContext context )
	{
		DataItemHandle handle = ( DataItemHandle ) design.getHandle( );
		if ( handle == null )
			return null;
		return getEventHandler( handle, context );
	}
	private static IDataItemEventHandler getEventHandler(
			DataItemHandle handle, ExecutionContext context )
	{
		IDataItemEventHandler eh = null;
		try
		{
			eh = ( IDataItemEventHandler ) getInstance( handle, context );
		} catch ( ClassCastException e )
		{
			addClassCastException( context, e, handle.getEventHandlerClass( ), IDataItemEventHandler.class );
		}
		return eh;
	}
}