code: public com.google.api.ads.adwords.axis.v201809.cm.FrequencyCap getFrequencyCap() {
          return frequencyCap;
      }
docs: Gets the frequencyCap value for this Campaign.
  
  @return frequencyCap   * Frequency cap for this campaign.
  <span class="constraint CampaignType">This field may
  not be set for campaign channel subtypes: DISPLAY_SMART_CAMPAIGN,
  UNIVERSAL_APP_CAMPAIGN, SEARCH_MOBILE_APP.</span>