https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Entity%21ContentEntityStorageBase.php/function/ContentEntityStorageBase%3A%3AdoDeleteFieldItems/10
function ContentEntityStorageBase::doDeleteFieldItems | Drupal API
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https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Entity%21ContentEntityNullStorage.php/function/ContentEntityNullStorage%3A%3AdoDeleteFieldItems/10
function ContentEntityNullStorage::doDeleteFieldItems | Drupal API
functiondrupalapi