public ContentEntityBase::hasTranslation($langcode)

public ContentEntityBase::id() Gets

public ContentEntityBase::preSave(EntityStorageInterface $storage)

Language code identifying the entity active language. This is the language field accessors will use to determine which field values manipulate

public ContentEntityBase::getTranslation($langcode)

protected ContentEntityBase::getTranslatedField($name, $langcode)

public ContentEntityBase::createDuplicate()

The plain data values of the contained fields. This always holds the original, unchanged values of the entity. The values are keyed by language

public ContentEntityBase::validate()

public ContentEntityBase::updateOriginalValues()