We have the problem that XJC generates sources for schemas that are
already existing in other JARs (in this case: wiseman.jar)
XJC therefore has the feature to not generate schemas that are already
included in other files. For this to work these JAR files must contain
the file META-INF/sun-jaxb.episode. Unfortunately the wiseman.jar does
not contain this file.
Please see https://maven-jaxb2-plugin.dev.java.net/docs/guide.html
under the headline "Separate schema compilation" for more information.
The inclusion of this file in wiseman would make the life for
developers much easier.