code: public com.google.api.ads.adwords.axis.v201809.cm.DateTimeRange getDateTimeRange() {
          return dateTimeRange;
      }
docs: Gets the dateTimeRange value for this CustomerSyncSelector.
  
  @return dateTimeRange   * Only return entities that have changed during the specified
  time range. String Format: yyyyMMdd
  HHmmss <Timezone ID> (for example, 20100609 150223
  America/New_York). See the <a
  href="https://developers.google.com/adwords/api/docs/appendix/timezones">Timezones</a>
  page for
  the complete list of Timezone IDs.
  <span class="constraint Required">This field is required
  and should not be {@code null}.</span>