public static Builder newBuilder(
            im.turms.server.common.access.client.dto.model.group.GroupJoinRequestsWithVersion prototype) {
        return DEFAULT_INSTANCE.toBuilder()
                .mergeFrom(prototype);
    }
<code>optional int64 last_updated_date = 2;</code>

@return The lastUpdatedDate.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/group/GroupJoinRequestsWithVersion.java