code: public com.google.api.ads.adwords.axis.v201809.cm.ServedAssetFieldType getPinnedField() {
          return pinnedField;
      }
docs: Gets the pinnedField value for this AssetLink.
  
  @return pinnedField   * The pinned field of the Asset.
  This restricts the Asset to only serve within this
  field.
  Multiple Assets can be pinned to the same field.
  An Asset that is unpinned or pinned to a different
  field will not serve in a field that has
  at least one asset pinned to it.
  This field is optional.