Issue #3336551: Improve FieldItemBase class: null-safe getParent() and proxy property definitions (!13188) · Merge requests · project / drupal

Added null-safe checks for getParent() in getEntity() and getLangcode().
Replaced direct use of $this->definition with getDataDefinition() where applicable.
Added proxy methods getPropertyDefinitions() and getPropertyDefinition($name).
Updated FieldItemTest to be Drupal 11 compatible, replacing getName() with getDataType().

Issue #3336551: Improve FieldItemBase class: null-safe getParent() and proxy property definitions