code: private static List<String> getClassifierWithLikes(MavenSession session) {
          // Check to see if the project defined the
          final Properties props = new Properties();
          props.putAll(session.getUserProperties());
          props.putAll(session.getCurrentProject().getProperties());
          return DetectMojo.getClassifierWithLikes(
              props.getProperty(DetectMojo.CLASSIFIER_WITH_LIKES_PROPERTY));
      }
docs: Inspects the session's user and project properties for the {@link
  DetectMojo#CLASSIFIER_WITH_LIKES_PROPERTY} and separates the property into a list.