module main-module {

    namespace "yang:test:main";
    prefix m;

    include submodule1 {
        revision-date 2014-04-02;
    }

    include submodule2 {
        revision-date 2014-06-30;
    }

    include submodule3 {
        revision-date 2014-06-30;
    }

    import import-module {
        prefix n;
    }

    revision 2014-06-30 {
    }

}