Not sure if this is possible, but I have two classes of the same name in different levels of a nested namespace and I'd like to make the more shallow class a friend of the deeper class. Example:

In File1.h:

```
namespace A
{
  class Foo
  {
    //stuff
  };
}

```

In File2.h:

```
namespace A
{
  namespace B
  {
    class Foo
    {
      friend class A::Foo; //Visual Studio says "Error: 'Foo' is not a member of 'A'"
    };
  }
}

```

Is this possible? If so, what is the proper syntax?