/// <summary>
/// The GAS is claimed when doing NEO transfer
/// This function will transfer NEO balance from account to itself
/// </summary>
/// <param name="keyPair">keyPair</param>
/// <returns>The transaction sended</returns>
public async Task <Transaction> ClaimGasAsync(KeyPair keyPair)
{
UInt160 toHash = Contract.CreateSignatureRedeemScript(keyPair.PublicKey).ToScriptHash();
BigInteger balance = await nep5API.BalanceOfAsync(NativeContract.NEO.Hash, toHash).ConfigureAwait(false);
Transaction transaction = await nep5API.CreateTransferTxAsync(NativeContract.NEO.Hash, keyPair, toHash, balance).ConfigureAwait(false);
await rpcClient.SendRawTransactionAsync(transaction).ConfigureAwait(false);
return(transaction);
}
