code: def get_all_users(include_course_summary=True):
      
      url = author_uid_url(None) + "?%s" % CUSTOM_FIELD
  
      if include_course_summary:
          url = "%s&%s" % (url, COURSE_SUMMARY)
  
      url = "%s&%s" % (url, PAGE_MAX_ENTRY)
  
      resp = get_resource(url)
  
      return _process_json_resp_data(resp)
docs: Return a list of BridgeUser objects with custom fields.