public void LinkTo(ContainerContext containerContext, ContainerService childService, string comment)
{
var dependency = childService.GetLinkedDependency(containerContext);
dependency.Comment = comment;
AddDependency(dependency, true);
UnionUsedContracts(childService);
if (target.Status.IsGood())
foreach (var instance in childService.instances)
if (!instances.Contains(instance))
instances.Add(instance);
}