@Override
    public boolean equals(Object o) {
        if (o == null || (!(o.getClass().equals(MetaPropertiesEnsemble.class)))) {
            return false;
        }
        MetaPropertiesEnsemble other = (MetaPropertiesEnsemble) o;
        return emptyLogDirs.equals(other.emptyLogDirs) &&
            errorLogDirs.equals(other.errorLogDirs) &&
            logDirProps.equals(other.logDirProps) &&
            metadataLogDir.equals(other.metadataLogDir);
    }
Find the cluster ID of this meta.properties ensemble.

@return  The cluster ID, or Optional.empty if none could be found.
metadata/src/main/java/org/apache/kafka/metadata/properties/MetaPropertiesEnsemble.java