Why can I access the private members of an enclosing class reference

Question

I have seen many questions about accessing private members of an enclosing class. However, my question is the opposite.

If I have (as an example), the following cod

Answer 1

static methods of a class can access private members of the same class through the same class instance. This behavior is consistent for static classes as well.

static void b(A someA) {
    String b = someA.outerString;
}