code: @Override
      public boolean fileCreated(File file) throws WatchingException {
          if (stylesheets != null) {
              try {
                  process(stylesheets);
              } catch (MojoExecutionException e) {
                  throw new WatchingException("Error while aggregating or minifying CSS resources", file, e);
              }
          } else {
              process(file);
          }
          return true;
      }
docs: Minifies the created files.
  
  @param file is the file.
  @return {@literal false} if the pipeline processing must be interrupted for this event. Most watchers should
  return {@literal true} to let other watchers be notified.
  @throws org.wisdom.maven.WatchingException if the watcher failed to process the given file.