code: public GitlabBadge getProjectBadge(Serializable projectId, Integer badgeId) throws IOException {
          String tailUrl = GitlabProject.URL + "/" + sanitizeProjectId(projectId) + GitlabBadge.URL
                  + "/" + badgeId;
          return retrieve().to(tailUrl, GitlabBadge.class);
      }
docs: Get project badge
  
  @param projectId The id of the project for which the badge should be retrieved
  @param badgeId   The id of the badge that should be retrieved
  @return The badge with a given id
  
  @throws IOException on GitLab API call error