public void PeerExchangeMessageDecode_Empty()
{
var data = new BEncodedDictionary().Encode();
var message = new PeerExchangeMessage();
message.Decode(data.AsSpan());
Assert.IsTrue(message.Added.IsEmpty, "#1");
Assert.IsTrue(message.AddedDotF.IsEmpty, "#2");
Assert.IsTrue(message.Dropped.IsEmpty, "#3");
}