public void Clean()
{
List <string> toCopy = new List <string>();
foreach (var point in _points)
{
if (_cleaner.IsWithin(point.Value))
{
toCopy.Add(point.Key);
}
}
Dictionary <string, RestorePoint> tmp = new Dictionary <string, RestorePoint>();
foreach (var name in toCopy)
{
tmp.Add(name, _points[name]);
}
_points = tmp;
}