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

    // Tests for null and empty input
    @Test
    public void test_getExtensionFromMimeType_null() {
        assertEquals("", generator.getExtensionFromMimeType(null));
    }

    @Test
    public void test_getExtensionFromMimeType_empty() {