docs: public List<PackageFile> getPackageFiles(Object projectIdOrPath, Integer packageId, int page, int perPage) throws GitLabApiException {
          Response response = get(Response.Status.OK, getPageQueryParams(page, perPage),
                  "projects", getProjectIdOrPath(projectIdOrPath), "packages", packageId, "package_files");
          return response.readEntity(new GenericType<List<PackageFile>>() {});
      }