.push_slice(b"RUNE_TEST")
            .push_slice(payload)
            .into_script(),
          value: 0
        }],
        lock_time: locktime::absolute::LockTime::ZERO,
        version: 0,
      }),
      Ok(Some(Runestone {
        etching: Some(Etching {
          rune: Rune(4),
          ..Default::default()
        }),
        ..Default::default()
      }))
    );
  }
}