public async Task CompleteChallenges(CancellationToken token = default(CancellationToken))
{
for (var index = 0; index < _challenges.Count; index++)
{
var challenge = _challenges[index];
var completeChallenge = await _client.CompleteChallengeAsync(challenge, token);
if (completeChallenge.Status != "valid")
{
throw new InvalidOperationException("Failed to complete challenge for " + _hosts[index] + Environment.NewLine +
JsonConvert.SerializeObject(challenge));
}
}
}
