code: public com.google.api.ads.admanager.axis.v201805.AdRuleSlotBumper getBumper() {
          return bumper;
      }
docs: Gets the bumper value for this BaseAdRuleSlot.
  
  @return bumper   * The {@link AdRuleSlotBumper} for this slot. This attribute
  is optional and
  defaults to {@link AdRuleSlotBumper#NONE}.