$this->entityTypeId = $entity_type->id();
$this->entityType = $entity_type;
$this->idKey = $this->entityType->getKey('id');
$this->uuidKey = $this->entityType->getKey('uuid');
$this->langcodeKey = $this->entityType->getKey('langcode');
$this->entityClass = $this->entityType->getClass();
$this->entityTypeId = $entity_type->id();
$this->entityType = $entity_type;
$this->idKey = $this->entityType->getKey('id');
$this->uuidKey = $this->entityType->getKey('uuid');
$this->langcodeKey = $this->entityType->getKey('langcode');
$this->entityClass = $this->entityType->getClass();