public void ClusterHeartbeatSenderState_must_use_specified_number_of_members()
{
// they are sorted by the hash (UID) of the UniqueAddress
_emptyState.AddMember(cc).AddMember(dd).AddMember(bb).AddMember(ee).ActiveReceivers.ShouldBe(ImmutableHashSet.Create<UniqueAddress>(bb,cc,dd));
}