private static void AssertFullySigned(HwiTester tester, PSBT psbt)
{
Assert.True(psbt.TryFinalize(out _));
var txbuilder = tester.Network.CreateTransactionBuilder();
txbuilder.AddCoins(psbt.Inputs.Select(i => i.GetCoin()));
Assert.True(txbuilder.Verify(psbt.ExtractTransaction()), "The transaction should be fully signed");
}