docs: public List<CommitRef> getCommitRefs(Object projectIdOrPath, String sha, CommitRef.RefType refType) throws GitLabApiException {
          Form form = new GitLabApiForm()
                  .withParam("type", refType)
                  .withParam(PER_PAGE_PARAM, getDefaultPerPage());
          Response response = get(Response.Status.OK, form.asMap(), "projects", getProjectIdOrPath(projectIdOrPath), "repository", "commits", urlEncode(sha), "refs");
          return (response.readEntity(new GenericType<List<CommitRef>>(){}));
      }