code: final void updateDelayInMillisecondsFrom(HttpResponse httpPollResponse) {
          final Long parsedDelayInMilliseconds = delayInMillisecondsFrom(httpPollResponse);
          if (parsedDelayInMilliseconds != null) {
              delayInMilliseconds = parsedDelayInMilliseconds;
          }
      }
docs: Update the delay in milliseconds from the provided HTTP poll response.
  @param httpPollResponse The HTTP poll response to update the delay in milliseconds from.