Akka.Cluster.Gossip.HasMember C# (CSharp) Method

        public bool HasMember(UniqueAddress node)
        {
            return _membersMap.Value.ContainsKey(node);
        }

        /// <summary>
        /// TBD
        /// </summary>
        /// <param name="oldGossip">TBD</param>
        /// <param name="newGossip">TBD</param>
        /// <param name="selfUniqueAddress">TBD</param>
        /// <returns>TBD</returns>
        internal static ImmutableList <ReachableMember> DiffReachable(Gossip oldGossip, Gossip newGossip, UniqueAddress selfUniqueAddress)
        {
            if (newGossip.Equals(oldGossip))
            {
                return(ImmutableList <ReachableMember> .Empty);
            }

            return(oldGossip.Overview.Reachability.AllUnreachable
                   .Where(node => newGossip.HasMember(node) && newGossip.Overview.Reachability.IsReachable(node) && !node.Equals(selfUniqueAddress))
                   .Select(node => new ReachableMember(newGossip.GetMember(node)))
                   .ToImmutableList());
        }