assertEquals("", generator.getExtensionFromMimeType("application/msword"));
    }

    // Test all supported image MIME types in one comprehensive test
    @Test
    public void test_getExtensionFromMimeType_allImageTypes() {
        final String[][] testCases = { { "image/gif", ".gif" }, { "image/tiff", ".tiff" }, { "image/svg+xml", ".svg" },