<https://www.javarticles.com/2015/07/java-serialize-and-deserialize-object.html#primaryimage>
<http://schema.org/url>
<https://www.javarticles.com/wp-content/uploads/2016/09/Java-100x100.png>
<https://www.javarticles.com/2015/07/java-serialize-and-deserialize-object.html>