GetAccountBalance with Task.WhenAll()

Program.cs

using System;
using System.Threading.Tasks;
using Casper.Network.SDK;
using Casper.Network.SDK.JsonRpc;
using Casper.Network.SDK.Types;

namespace Casper.NET.SDK.Examples
{
    public class GetAccountBalance
    {
        public static async Task Main(string[] args)
        {
            string nodeAddress = "http://3.136.227.9:7777/rpc";

            var pk1 = PublicKey.FromHexString("0203d9f3588e6589f334938f88ce50b2d6e15d90e2979d9cb533bf44772581f06e01");
            var pk2 = PublicKey.FromHexString("016d9e3db0a800aef8d18975b469c77bef042ee909d24cb83d27df97a22bb6d8ad");
            var pk3 = PublicKey.FromHexString("0124bfdae2ed128fa5e4057bc398e4933329570e47240e57fc92f5611a6178eba5");
            var pk4 = PublicKey.FromHexString("01270a577d2d106c4d29402775f3dffcb9f04aad542579dd4d1cfad20572ebcb7c");

            try
            {
                var casperSdk = new NetCasperClient(nodeAddress);

                var task1 = casperSdk.GetAccountBalance(pk1);
                var task2 = casperSdk.GetAccountBalance(pk2);
                var task3 = casperSdk.GetAccountBalance(pk3);
                
                Task.WhenAll(task1, task2, task3).Wait();
                
                Console.WriteLine($"Balance account {pk1.ToAccountHex()}: " + task1.Result.Parse().BalanceValue);
                Console.WriteLine($"Balance account {pk2.ToAccountHex()}: " + task2.Result.Parse().BalanceValue);
                Console.WriteLine($"Balance account {pk3.ToAccountHex()}: " + task3.Result.Parse().BalanceValue);
                
                var rpcResponse = await casperSdk.GetAccountBalance(pk4);
                Console.WriteLine($"Balance account {pk4.ToAccountHex()}: " + rpcResponse.Parse().BalanceValue);
            }
            catch (RpcClientException e)
            {
                Console.WriteLine("ERROR:\n" + e.RpcError.Message);
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
        }
    }
}