@java.lang.Override
        public boolean hasGroupIdToUnshareWith() {
            return instance.hasGroupIdToUnshareWith();
        }
<code>optional int64 group_id_to_unshare_with = 6;</code>

@return Whether the groupIdToUnshareWith field is set.
turms-client-kotlin/src/main/java/im/turms/client/model/proto/request/storage/UpdateMessageAttachmentInfoRequest.java