for (EngineRef engine : _getEngineRefs()) {
final EngineInfo engineInfo = engine.getContainerInfo();
if (tracing!=null) {
tracing.addContainerMark(DeploymentTracing.ContainerMark.LOAD,
engineInfo.getSniffer().getModuleType());
}
// get the container.
Deployer deployer = engineInfo.getDeployer();