docs: private static Set<String> processIncludeExclude(
  			CopyResourcesMojo copyResourcesMojo, Resource resource,
  			Set<String> files) {
  		Set<String> retval = new HashSet<String>(files);
  		// process with include parameters
  		retval = IncludeService.process(copyResourcesMojo,
  				resource.getIncludes(), files);
  		copyResourcesMojo.getLog().debug(
  				"files after include processing :" + files);
  		// process with exclude parameters
  		retval = ExcludeService.process(copyResourcesMojo,
  				resource.getExcludes(), retval);
  		copyResourcesMojo.getLog().debug(
  				"files after exclude processing :" + files);
  		return retval;
  	}