All classes that implement ContactInterface in CRM Core 8.2
- class \Drupal\crm_core_contact\Entity\Individual extends \Drupal\entity\Revision\RevisionableContentEntityBase implements IndividualInterface uses EntityChangedTrait, EntityOwnerTrait
- class \Drupal\crm_core_contact\Entity\Organization extends \Drupal\entity\Revision\RevisionableContentEntityBase implements ContactInterface uses EntityChangedTrait, EntityOwnerTrait