code: public void setDayPartTargeting(com.google.api.ads.admanager.axis.v201805.DayPartTargeting dayPartTargeting) {
          this.dayPartTargeting = dayPartTargeting;
      }
docs: Sets the dayPartTargeting value for this Targeting.
  
  @param dayPartTargeting   * Specifies the days of the week and times that are targeted
  by the
  {@link LineItem}. This attribute is optional.