in Amazon.QLDB.DMVSample.LedgerSetup/CreateLedger.cs [83:88]
private async Task<bool> CheckIfLedgerExistsAsync()
{
Console.WriteLine("Checking if ledger exists.");
ListLedgersResponse response = await qldbClient.ListLedgersAsync(new ListLedgersRequest());
return response.Ledgers != null && response.Ledgers.Any(x => x.Name == LedgerName);
}