https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21TypedData%21ListDataDefinition.php/function/ListDataDefinition%3A%3AsetItemDefinition/8.9.x
function ListDataDefinition::setItemDefinition | Drupal API
functiondrupalapi
https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21TypedData%21ListDataDefinition.php/function/ListDataDefinition%3A%3AsetItemDefinition/11.x
function ListDataDefinition::setItemDefinition | Drupal API
functiondrupalapi