@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if ( ! (o instanceof Cluster other)) return false;
        if ( ! this.id.equals(other.id)) return false;
        if ( this.size != other.size) return false;
        if ( ! this.indices.equals(other.indices)) return false;
        return true;
    }
Returns a list of node indices in this cluster.
hosted-zone-api/src/main/java/ai/vespa/cloud/Cluster.java