private void AddLocationsAndValidate(BinManager manager, List <MachineId> locations, int locationsToAdd)
{
var newLocations = Enumerable.Range(locations.Count, locationsToAdd).Select(num => new MachineId(num));
foreach (var location in newLocations)
{
locations.Add(location);
manager.AddLocation(location);
ValidateBalanced(manager, locations);
}
}