code: public void setValuePeriodType(com.google.api.ads.admanager.axis.v201902.PeriodType valuePeriodType) {
          this.valuePeriodType = valuePeriodType;
      }
docs: Sets the valuePeriodType value for this TimeSeries.
  
  @param valuePeriodType   * The period of each time series value (e.g. daily or custom).