<https://javadeveloperzone.com/#personlogo>
<http://schema.org/contentUrl>
<https://secure.gravatar.com/avatar/f79aac00ba8f40a3bcceaf7649e6b4c8?s=96&r=g>
<https://javadeveloperzone.com/spring-boot/spring-gson-custom-date-or-long-format/>