code: public GitlabGroup getGroup(String path) throws IOException {
          String tailUrl = GitlabGroup.URL + "/" + URLEncoder.encode(path, "UTF-8");
          return retrieve().to(tailUrl, GitlabGroup.class);
      }
docs: Get a group by path
  
  @param path Path of the group
  @return {@link GitlabGroup} object
  
  @throws IOException on gitlab api call error