public void TestLease()
        {
            CheckBalance();
            long              amount = 1 * Blockchain.V_UNITY;
            LeaseTransaction  tx     = TransactionFactory.BuildLeaseTx(recipient, amount);
            ProvenTransaction result = account.SendTransaction(chain, tx);

            Assert.IsNotNull(result.Id);
            Assert.IsTrue(WaitPackageOnChain(result.Id));
            leaseId = result.Id;
        }