code: public com.google.api.ads.adwords.axis.v201809.cm.AssetType getAssetSubtype() {
          return assetSubtype;
      }
docs: Gets the assetSubtype value for this Asset.
  
  @return assetSubtype   * Asset type. Used for returning asset type and filtering by
  asset type in GET.
  <span class="constraint Selectable">This field can
  be selected using the value "AssetSubtype".</span><span class="constraint
  Filterable">This field can be filtered on.</span>
  <span class="constraint ReadOnly">This field is read
  only and will be ignored when sent to the API.</span>