/// <inheritdoc/>
        public void PeerSeen(IPEndPoint endpoint, DateTime peerSeenAt)
        {
            PeerAddress peer = this.FindPeer(endpoint);

            if (peer == null)
            {
                return;
            }

            peer.SetLastSeen(peerSeenAt);
        }
        /// <inheritdoc/>
        public void PeerSeen(IPEndPoint endpoint, DateTime peerSeenAt)
        {
            PeerAddress peer = this.FindPeer(endpoint);

            peer?.SetLastSeen(peerSeenAt);
        }