Entity API Link https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!entity.api.php/gr… Drupal Entity API documentation.
entity.api.php Link https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!entity.api.php/gr… Drupal Entity API code documentation.
Entity API Link Templates Link https://www.drupal.org/docs/drupal-apis/entity-api/link-templates Documentation for Entity Link Templates.
Drupal API EntityInterface::getLinkTemplates() Link https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!entity.api.php/gr…