public static async Task <int> CountAccountsByCodeHashAsync(this ITonClient client, string tvc) { var hash = await client.GetCodeHashFromTvcAsync(tvc); var result = await client.Net.QueryCollectionAsync(new ParamsOfQueryCollection { Collection = "accounts", Filter = new { code_hash = new { eq = hash } }.ToJson(), Result = "id" }); return(result.Result.Length); }