final FrontendClientMetadataBuilder previous = clients.put(id.getFrontendId(), client);
if (previous != null) {
LOG.debug("{}: Replaced client {} with {}", shardName, previous, client);
final FrontendClientMetadataBuilder previous = clients.put(id.getFrontendId(), client);
if (previous != null) {
LOG.debug("{}: Replaced client {} with {}", shardName, previous, client);