--- /dev/null
+<?php
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Converter;
+
+use Drupal\Component\Plugin\PluginManagerInterface;
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Drupal\drupalmoduleupgrader\ConverterBase;
+use Drupal\drupalmoduleupgrader\TargetInterface;
+use Pharborist\Functions\ParameterNode;
+use Psr\Log\LoggerInterface;
+
+/**
+ * @Converter(
+ * id = "hook_node_prepare",
+ * description = @Translation("Converts hook_node_prepare() into hook_ENTITY_TYPE_prepare_form()."),
+ * hook = "hook_node_prepare",
+ * dependencies = { "plugin.manager.drupalmoduleupgrader.rewriter" }
+ * )
+ */
+class HookNodePrepare extends ConverterBase {
+
+ /**
+ * @var \Drupal\Component\Plugin\PluginManagerInterface
+ */
+ protected $rewriters;
+
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, TranslationInterface $translator, LoggerInterface $log, PluginManagerInterface $rewriters) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition, $translator, $log);
+ $this->rewriters = $rewriters;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function convert(TargetInterface $target) {
+ /** @var \Pharborist\Functions\FunctionDeclarationNode $function */
+ $function = $target->getIndexer('function')->get('hook_node_prepare');
+
+ // foo_node_prepare() --> foo_node_prepare_form().
+ $function->setName($function->getName() . '_form');
+
+ // The first parameter is a node, so rewrite the function accordingly.
+ $this->rewriters
+ ->createInstance('_entity:node')
+ ->rewrite($function->getParameterAtIndex(0));
+
+ // Create the $operation parameter.
+ $function->appendParameter(ParameterNode::create('operation'));
+
+ // Create the $form_state parameter.
+ $form_state = ParameterNode::create('form_state')->setTypeHint('\Drupal\Core\Form\FormStateInterface');
+ $function->appendParameter($form_state);
+
+ $target->save($function);
+ }
+
+}