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diff --git a/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Fixer/CreateClass.php b/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Fixer/CreateClass.php
new file mode 100644
index 000000000..45d4734c7
--- /dev/null
+++ b/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Fixer/CreateClass.php
@@ -0,0 +1,84 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer\CreateClass.
+ */
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Fixer;
+
+use Drupal\drupalmoduleupgrader\FixerBase;
+use Pharborist\DocCommentNode;
+use Pharborist\Objects\ClassNode;
+use Pharborist\Parser;
+use Pharborist\RootNode;
+use Pharborist\Token;
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * @Fixer(
+ *  id = "create_class"
+ * )
+ */
+class CreateClass extends FixerBase {
+
+  /**
+   * @var \Symfony\Component\Filesystem\Filesystem
+   */
+  protected $fs;
+
+  public function __construct(array $configuration, $plugin_id, $plugin_definition) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->fs = new Filesystem();
+  }
+
+  public function execute() {
+    $ns = $this->extractNS($this->configuration['class']);
+    $class = $this->extractLocal($this->configuration['class']);
+
+    $doc = RootNode::create($ns);
+    $ns = $doc->getNamespace($ns);
+    Token::newline()->insertBefore($ns);
+    Token::newline()->appendTo($ns);
+    $class = ClassNode::create($class);
+
+    if ($parent = $this->configuration['parent']) {
+      Parser::parseSnippet('use ' . ltrim($parent, '\\') . ';')
+        ->appendTo($ns)
+        ->after(Token::newline());
+      $class->setExtends($this->extractLocal($parent));
+    }
+
+    $interfaces = (array) $this->configuration['interfaces'];
+    foreach ($interfaces as $interface) {
+      Parser::parseSnippet('use ' . ltrim($interface, '\\') . ';')
+        ->appendTo($ns)
+        ->after(Token::newline());
+    }
+    $class->setImplements(array_map([ $this, 'extractLocal' ], $interfaces));
+
+    if (isset($this->configuration['doc'])) {
+      $class->setDocComment(DocCommentNode::create($this->configuration['doc']));
+    }
+
+    $class->appendTo($ns)->before(Token::newline());
+
+    $destination = $this->getUnaliasedPath($this->configuration['destination']);
+    $dir = subStr($destination, 0, strrPos($destination, '/'));
+    $this->fs->mkdir($dir);
+    file_put_contents($destination, $doc->getText());
+    // Need to store the class' local name as its index identifier because
+    // \Pharborist\Filter::isClass() doesn't support lookup by qualified path.
+    $this->target->getIndexer('class')->addFile($destination);
+  }
+
+  protected function extractLocal($path) {
+    return subStr($path, strrPos($path, '\\') + 1);
+  }
+
+  protected function extractNS($path) {
+    $path = ltrim($path, '\\');
+    return subStr($path, 0, strrPos($path, '\\'));
+  }
+
+}