code: public BoxRequestsFile.GetFileComments getCommentsRequest(String id) {
          BoxRequestsFile.GetFileComments request = new BoxRequestsFile.GetFileComments(id, getFileCommentsUrl(id), mSession);
          return request;
      }
docs: Gets a request that retrieves the comments on a file
  
  @param id    id of the file to retrieve comments for
  @return  request to retrieve comments on a file