--- /dev/null
+/**
+ * Implements hook_entity_bundle_field_info_alter().
+ */
+function {{ machine_name }}_entity_bundle_field_info_alter(&$fields, \Drupal\Core\Entity\EntityTypeInterface $entity_type, $bundle) {
+ if ($entity_type->id() == 'node' && $bundle == 'article' && !empty($fields['mymodule_text'])) {
+ // Alter the mymodule_text field to use a custom class.
+ $fields['mymodule_text']->setClass('\Drupal\anothermodule\EntityComputedText');
+ }
+}