docs: public List<Commit> getCommits(Object projectIdOrPath, String ref, Date since, Date until, String path, int page, int perPage) throws GitLabApiException {
          Form formData = new GitLabApiForm()
                  .withParam("ref_name", ref)
                  .withParam("since", ISO8601.toString(since, false))
                  .withParam("until", ISO8601.toString(until, false))
                  .withParam("path", (path == null ? null : urlEncode(path)))
                  .withParam(PAGE_PARAM,  page)
                  .withParam(PER_PAGE_PARAM, perPage);
          Response response = get(Response.Status.OK, formData.asMap(), "projects", getProjectIdOrPath(projectIdOrPath), "repository", "commits");
          return (response.readEntity(new GenericType<List<Commit>>() {}));
      }