public void AddToQueryString(QueryStringBuilder qsb)
{
if (State.HasValue)
{
qsb.SetValue("state", State.Value == IssueState.Opened ? "opened" : "closed");
}
if (Labels != null && Labels.Any())
{
qsb.SetValue("labels", Labels.Aggregate((acc, x) => acc + "," + x));
}
if (!string.IsNullOrEmpty(Milestone))
{
qsb.SetValue("milestone", Milestone);
}
}