<description>
            The relative path of the parent {@code pom.xml} file within the checkout.
            If not specified, it defaults to {@code ../pom.xml}.
            Maven looks for the parent POM first in this location on
            the filesystem, then the local repository, and lastly in the remote repo.
            {@code relativePath} allows you to select a different location,

            Let's take the warnings for one module, c.g.c.base.testModule, as an example:

              [INFO] Validating units:
              [INFO]    Ignored 53 units with compilation errors in first pass.
              [INFO] Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.

            Turning up the log level, we see that GWT is trying to compile classes from other