The jaxws quickstarts in the 10.x branch have the following errors:

Endorsed directory '/home/rob/code/github/jboss_stuff/quickstart/jaxws-ejb/service/target/endorsed' is missing. You may need to a perform a
Maven command line build in order to create it.

Even after building from the command line, the requested folders are not created. This indicates that either there is something wrong with the build (ie it should be creating the endorsed folder) or this is a legacy detail that is no longer needed (ie the project does not actually require an endorsed directory, so the pom lines requesting it are unnecessary)