public static String getManifestAttributeValue(Class<?> clazz, String attributeName) {
        return getManifest(clazz).getMainAttributes().getValue(attributeName);
    }
@Test
    void testGetManifestAttributeValue() {
        assertThat(JarUtils.getManifestAttributeValue(Gson.class, "Bundle-Developers")).contains("google.com");
    }