private IActivationStrategy?ResolveInnerType(IBindingRequest bindingRequest) =>
 innerResolver.ApplyResolutionPolicy(bindingRequest.CreateSubRequest(typeToResolve));
 public IActivationStrategy?ApplyResolutionPolicy(IBindingRequest request) =>
 registry.TryGetBinding(request.DesiredType, out var ret) && ret.ValidForRequest(request) ?
 ret : backupCache?.ApplyResolutionPolicy(request);