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:- module intermod_nested_module2.

:- interface.

:- type foo.

:- module sub_module.

:- interface.

:- import_module int.

:- pred bar(int, foo).
:- mode bar(in, out) is det.

:- end_module sub_module.

:- implementation.

:- type foo
    --->    foo(int).

:- module sub_module.

:- implementation.

bar(X, foo(Y)) :-
    Y = X + 1.

:- end_module sub_module.