In some cases we need to modify the Protocol generated Deployment.

In the case of CDI, it's BeanManagers are hierarchical, a BeanManager created for a ejb-jar in a ear is not visible to a war unless the war also contains a beans.xml. When using the Servlet Protocol, a war is added without a beans.xml since the protocol it self is unaware of CDI, and Beans are never injected into the testcase.

DeploymentProcessor.process(TestClass relevant class, TestDeployment auxAndApplicationArchives, Archive<?> finalDeployment);

https://issues.jboss.org/browse/WELD-709