    @Test
    public void testMainClass() {


        Class<?> mainClass = ApplicationIntrospector.mainClass();

        // TODO: until https://github.com/bootique/bootique/issues/52 is available,
        // we can't make an exact assertion here, as tests can be started from different IDEs, etc.

        assertNotNull(mainClass);
        assertNotEquals(Bootique.class, mainClass);
    }