private final String nodeId;
private final String username;
private final Set<String> passwords = new HashSet<>();
private final Set<KeyPair> clientKeys = new HashSet<>();
Builder(final String nodeId, final String username) {
private final String nodeId;
private final String username;
private final Set<String> passwords = new HashSet<>();
private final Set<KeyPair> clientKeys = new HashSet<>();
Builder(final String nodeId, final String username) {