@Override
    public void addReplicatorStateListener(final Replicator.ReplicatorStateListener replicatorStateListener) {
        Requires.requireNonNull(replicatorStateListener, "replicatorStateListener");
        this.replicatorStateListeners.add(replicatorStateListener);
    }
Retrieve current configuration this node seen so far. It's not a reliable way to
retrieve cluster peers info, you should use {@link #listPeers()} instead.

@return current configuration.

@since 1.0.3
jraft-core/src/main/java/com/alipay/sofa/jraft/core/NodeImpl.java