public void testQuietOutputLevel() {
        assertEquals(options, options.quiet());
        assertEquals(JavadocOutputLevel.QUIET, options.getOutputLevel());
    }

    @Test
    public void testVerboseOutputLevel() {
        assertEquals(options, options.verbose());
        assertEquals(JavadocOutputLevel.VERBOSE, options.getOutputLevel());
        assertTrue(options.isVerbose());
    }

    @Test