public List<License> getLicenses() {
        return licenses;
    }
@Test
    public void testGetLicenses() {
        Model instance = new Model();
        instance.addLicense(new License("name", "url"));
        List<License> expResult = new ArrayList<>();
        expResult.add(new License("name", "url"));
        List<License> result = instance.getLicenses();
        assertEquals(expResult, result);
    }