public static im.turms.server.common.access.client.dto.model.group.GroupMembersWithVersion getDefaultInstance() {
        return DEFAULT_INSTANCE;
    }
<code>optional int64 last_updated_date = 2;</code>

@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/group/GroupMembersWithVersion.java