docs: protected String extractParamValue(Plugin plugin, String paramName) throws MojoExecutionException {
          Xpp3Dom configuration = (Xpp3Dom) plugin.getConfiguration();
          if (configuration == null) {
              return null;
          }
          Xpp3Dom paramDom = configuration.getChild(paramName);
          return paramDom == null ? null : paramDom.getValue();
      }