ExtendedDeploymentContext context,
ProgressTracker tracker) throws Exception {
DeploymentTracing tracing = context.getModuleMetaData(DeploymentTracing.class);
if (tracing!=null) {
tracing.addMark(DeploymentTracing.Mark.START);
}
super.start(context, tracker);
// registers all deployed items.
for (ModuleInfo module : getModuleInfos()) {