code: public com.google.api.ads.admanager.axis.v201805.MidrollFrequencyType getVideoMidrollFrequencyType() {
          return videoMidrollFrequencyType;
      }
docs: Gets the videoMidrollFrequencyType value for this BaseAdRuleSlot.
  
  @return videoMidrollFrequencyType   * The frequency type for video ads in this ad rule slot. This
  attribute
  is required for mid-rolls, but if this is not a mid-roll,
  the value is set to
  {@link MidrollFrequencyType#NONE}.