EntityDisplayBase::__sleep

public EntityDisplayBase::__sleep()

public function __sleep() {
  // Only store the definition, not external objects or derived data.
  $keys = array_keys($this->toArray());
  // In addition, we need to keep the entity type and the "is new" status.
  $keys[] = 'entityTypeId';
  $keys[] = 'enforceIsNew';
  // Keep track of the serialized keys, to avoid calling toArray() again in
  // __wakeup(). Because of the way __sleep() works, the data has to be
  // present in the object to be included in the serialized values.
  $keys[] = '_serializedKeys';
  $this->_serializedKeys = $keys;
  return $keys;
}