+<?php
+
+/**
+ * @file
+ * Contains \Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer\Implement.
+ */
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer;
+
+use Drupal\drupalmoduleupgrader\FixerBase;
+use Pharborist\DocCommentNode;
+use Pharborist\Objects\ClassMethodNode;
+
+/**
+ * @Fixer(
+ * id = "implement"
+ * )
+ */
+class Implement extends FixerBase {
+
+ public function execute() {
+ /** @var \Pharborist\Objects\ClassNode $class */
+ $class = $this
+ ->target
+ ->getIndexer('class')
+ ->get($this->configuration['target']);
+
+ // Use reflection to get the method definition.
+ list ($interface, $method) = explode('::', $this->configuration['definition']);
+ $interface = new \ReflectionClass($interface);
+ $method = $interface->getMethod($method);
+
+ $node = ClassMethodNode::create($method->getName());
+ $node->setDocComment(DocCommentNode::create('@inheritdoc'));
+ $class->appendMethod($node);
+ $node->matchReflector($method);
+
+ // @TODO There needs to be a way to implement the method body!
+
+ $this->target->save($class);
+ }
+
+}