code: public com.google.api.ads.adwords.axis.v201809.rm.RuleBasedUserListPrepopulationStatus getPrepopulationStatus() {
          return prepopulationStatus;
      }
docs: Gets the prepopulationStatus value for this RuleBasedUserList.
  
  @return prepopulationStatus   * Status of pre-population. The field is default to NONE if not
  set which means the previous
  users will not be considered. If set to REQUESTED,
  past site visitors or app users who match
  the list definition will be included in the list
  (works on the Display Network only). This will
  only pre-populate past users within up to the
  last 30 days, depending on the list's membership
  duration and the date when the remarketing tag
  is added. The status will be updated to FINISHED
  once request is processed, or FAILED if the request
  fails.
  <span class="constraint Selectable">This field
  can be selected using the value "PrepopulationStatus".</span>