How does the angular.mock.module function know what module to address when mocking dependencies?

I am trying to figure out how the function angular.mock.module (often aliased to window.module) works. I understand its main usage is loading a module in your tests; that is easy:

beforeEach(angular.mock.module("mymodule"));

This will load myhmodule before each it in my jasmine specs.

Another usage of module is to mock services/factories/values inside a certain module. Assuming mymodule has a value called foo of value 42 I can, in my specs, go like this:

beforeEach(angular.mock.module("mymodule")); // this loads the module

// whereas this mocks the value of foo
beforeEach(module(function($provide) {
   $provide.value("foo", 43);
});

My question is now the following: how does module know what module to address when mocking using the $provide service? In fact, in my test, I could have written:

beforeEach(angular.mock.module("mymodule"));
beforeEach(angular.mock.module("anothermodule"));

beforeEach(module(function($provide) {
   $provide.value("foo", 43);
});

Would this last snippet provide a foo=43 to mymodule or anothermodule?