docs: public static void copyDefaultResources(Path configPath) throws IOException {
          Path targetResourceDir = configPath.resolve("_default");
  
          for (String filename : MAPPING_RESOURCES) {
              Path target = targetResourceDir.resolve(filename);
              if (Files.exists(target)) {
                  logger.debug("Mapping [{}] already exists", filename);
              } else {
                  logger.debug("Copying [{}]...", filename);
                  copyResourceFile(CLASSPATH_RESOURCES_ROOT + filename, target);
              }
          }
      }