static void Main(string[] args)
{
// Find your Account Sid and Auth Token at twilio.com/user/account
string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
string AuthToken = "your_auth_token";
string WorkspaceSid = "WSXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
string ActivitySid = "WAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
var client = new TaskRouterClient(AccountSid, AuthToken);
Activity activity = client.UpdateActivity(WorkspaceSid, ActivitySid, "NewActivityName");
Console.WriteLine(activity.FriendlyName);
Console.WriteLine(activity.Available);
}