public static void Scavenge()
{
foreach (Type serviceType in ServiceInstancePool.Keys)
{
lock (serviceType)
{
WeakReferenceCollection instanceReferenceList = ServiceInstancePool[serviceType];
for (int i = instanceReferenceList.Count - 1; i > -1; i--)
{
if (instanceReferenceList[i].Target == null)
{
instanceReferenceList.RemoveAt(i);
}
}
}
}
}