@Deprecated
    public Set<HostInfo> getStandbyHosts() {
        return standbyHosts;
    }
Get the Kafka Streams instances that host the key as standbys.

@return set of standby {@link HostInfo} or a empty set, if no standbys are configured
@deprecated since 2.7.0; use {@link #standbyHosts()} instead.
streams/src/main/java/org/apache/kafka/streams/KeyQueryMetadata.java