https://www.baeldung.com/curl-rest
Drupal Specific
https://www.drupal.org/docs/8/core/modules/rest/1-getting-started-rest-…
https://dev.acquia.com/blog/decoupling-drupal-8-core-retrieving-and-man…
https://www.drupal.org/docs/8/core/modules/rest/javascript-and-drupal-8…