docs: public CompletableFuture<Revision> removePerTokenPermission(Author author, String projectName,
                                                                  String repoName, String appId) {
          requireNonNull(author, "author");
          requireNonNull(projectName, "projectName");
          requireNonNull(repoName, "repoName");
          requireNonNull(appId, "appId");
  
          return removePermissionAtPointer(author, projectName,
                                           perTokenPermissionPointer(repoName, appId),
                                           "Remove permission of the token '" + appId +
                                           "' from the project " + projectName);
      }