Drupal 8: Determine if an entity is a certain content type

Drupal_8_Determine_if_an_entity_is_a_certain_content_type.md

Drupal 8: Determine if an entity is a certain content type

use Drupal\Core\Entity\EntityInterface;`

function hook_entity_presave(EntityInterface $entity) {
  if($entity->getEntityTypeId() == 'my_entity_type' && $entity->bundle() == 'my_content_type') {
    // Do your stuff here
  }
}

https://drupal.stackexchange.com/questions/228563/determine-if-an-entity-is-a-certain-content-type