code: public com.google.api.ads.adwords.axis.v201809.mcm.ServiceType getServiceType() {
          return serviceType;
      }
docs: Gets the serviceType value for this ServiceLink.
  
  @return serviceType   * The service being linked.
  <span class="constraint Filterable">This field can
  be filtered on using the value "ServiceType".</span>
  <span class="constraint Required">This field is required
  and should not be {@code null}.</span>