code: public static AddOnResultFetcher fetcher(final String pathAccountSid, 
                                               final String pathReferenceSid, 
                                               final String pathSid) {
          return new AddOnResultFetcher(pathAccountSid, pathReferenceSid, pathSid);
      }
docs: Create a AddOnResultFetcher to execute fetch.
  
  @param pathAccountSid The SID of the Account that created the resource to
  fetch
  @param pathReferenceSid The SID of the recording to which the result to
  fetch belongs
  @param pathSid The unique string that identifies the resource to fetch
  @return AddOnResultFetcher capable of executing the fetch