public void WithoutPeerId()
        {
            var id = "QmQusTXc1Z9C1mzxsqC9ZTFXCgSkpBRGgW4Jk2QYHxKE22";

            var ma1 = new MultiAddress("/ip4/127.0.0.1/tcp/4001");

            Assert.Same(ma1, ma1.WithoutPeerId());

            ma1 = new MultiAddress($"/ip4/127.0.0.1/tcp/4001/ipfs/{id}");
            Assert.Equal("/ip4/127.0.0.1/tcp/4001", ma1.WithoutPeerId());

            ma1 = new MultiAddress($"/ip4/127.0.0.1/tcp/4001/p2p/{id}");
            Assert.Equal("/ip4/127.0.0.1/tcp/4001", ma1.WithoutPeerId());
        }