code: function AuthReplyPacket(signature) {
    if (!(this instanceof AuthReplyPacket))
      return new AuthReplyPacket(signature);
  
    Packet.call(this);
  
    this.signature = signature || encoding.ZERO_SIG64;
  }
docs: Represents a `authreply` packet.
  @constructor
  @param {Buffer?} signature
  @property {Buffer} signature