private void RemoveExpiredWrappers()
{
Task.Run(() =>
{
var now = _clock.UtcNow;
var toRemove = _requestWrappers
.Where(kvp => kvp.Value.ExpiresAfter >= now)
.ToArray();
foreach (var kvp in toRemove)
{
RemoveWrapper(kvp.Key);
_logger.Debug("Removing request {0} which timed out at {1}", kvp.Key, kvp.Value.ExpiresAfter);
}
});
}