docs: private CompletableFuture<Void> requestBootstrapFromPeer(MemberId peer) {
      LOGGER.trace("Sending bootstrap request to {} for {}", peer, mapName);
      return clusterCommunicator.<MemberId, Void>send(
          bootstrapMessageSubject,
          localMemberId,
          serializer::encode,
          serializer::decode,
          peer)
          .whenComplete((updates, error) -> {
            if (error != null) {
              LOGGER.debug("Bootstrap request to {} failed: {}", peer, error.getMessage());
            }
          });
    }