--- /dev/null
+<?php
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Converter\Functions;
+
+use Drupal\drupalmoduleupgrader\TargetInterface;
+use Pharborist\Functions\FunctionCallNode;
+use Pharborist\Objects\ObjectMethodCallNode;
+
+/**
+ * @Converter(
+ * id = "form_state_values_clean",
+ * description = @Translation("Rewrites calls to form_state_values_clean().")
+ * )
+ */
+class FormStateValuesClean extends FunctionCallModifier {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function rewrite(FunctionCallNode $call, TargetInterface $target) {
+ return ObjectMethodCallNode::create(clone $call->getArgumentList()->getItem(0), 'cleanValues');
+ }
+
+}