diff --git a/src/Common/SchemaExtractor.php b/src/Common/SchemaExtractor.php
index 112cb82..7a78f0b 100644
--- a/src/Common/SchemaExtractor.php
+++ b/src/Common/SchemaExtractor.php
@@ -4,6 +4,7 @@
 namespace TgScraper\Common;
 
 
+use JetBrains\PhpStorm\ArrayShape;
 use PHPHtmlParser\Dom;
 use PHPHtmlParser\Exceptions\ChildNotFoundException;
 use PHPHtmlParser\Exceptions\CircularException;
@@ -41,6 +42,40 @@ class SchemaExtractor
     {
     }
 
+    /**
+     * @throws ParentNotFoundException
+     * @throws ChildNotFoundException
+     */
+    #[ArrayShape(['description' => "string", 'table' => "mixed", 'extended_by' => "array"])]
+    private function parseNode(Dom\Node\AbstractNode $node): ?array
+    {
+        $description = '';
+        $table = null;
+        $extendedBy = [];
+        $tag = '';
+        $sibling = $node;
+        while (!str_starts_with($tag, 'h')) {
+            $sibling = $sibling->nextSibling();
+            $tag = $sibling?->tag?->name();
+            if (empty($node->text()) or empty($tag) or $tag == 'text') {
+                continue;
+            } elseif ($tag == 'p') {
+                $description .= PHP_EOL . $sibling->innerHtml();
+            } elseif ($tag == 'ul') {
+                $items = $sibling->find('li');
+                /* @var Dom\Node\AbstractNode $item */
+                foreach ($items as $item) {
+                    $extendedBy[] = $item->innerText;
+                }
+                break;
+            } elseif ($tag == 'table') {
+                $table = $sibling->find('tbody')->find('tr');
+                break;
+            }
+        }
+        return ['description' => $description, 'table' => $table, 'extended_by' => $extendedBy];
+    }
+
     /**
      * @return array
      * @throws ChildNotFoundException
@@ -74,32 +109,12 @@ class SchemaExtractor
             if (!str_contains($name = $element->text, ' ')) {
                 $isMethod = lcfirst($name) == $name;
                 $path = $isMethod ? 'methods' : 'types';
-                $temp = $element;
-                $description = '';
-                $table = null;
-                while (true) {
-                    try {
-                        $element = $element->nextSibling();
-                    } catch (ChildNotFoundException) {
-                        break;
-                    }
-                    $tag = $element->tag->name() ?? null;
-                    if (empty($temp->text()) or empty($tag) or $tag == 'text') {
-                        continue;
-                    } elseif (str_starts_with($tag, 'h')) {
-                        break;
-                    } elseif ($tag == 'p') {
-                        $description .= PHP_EOL . $element->innerHtml();
-                    } elseif ($tag == 'table') {
-                        $table = $element->find('tbody')->find('tr');
-                        break;
-                    }
-                }
-                /* @var Dom\Node\AbstractNode $element */
+                ['description' => $description, 'table' => $table, 'extended_by' => $extendedBy] = self::parseNode($element);
                 $data[$path][] = self::generateElement(
                     $name,
                     trim($description),
                     $table,
+                    $extendedBy,
                     $isMethod
                 );
             }
@@ -111,6 +126,7 @@ class SchemaExtractor
      * @param string $name
      * @param string $description
      * @param Dom\Node\Collection|null $unparsedFields
+     * @param array $extendedBy
      * @param bool $isMethod
      * @return array
      * @throws ChildNotFoundException
@@ -124,13 +140,15 @@ class SchemaExtractor
         string $name,
         string $description,
         ?Dom\Node\Collection $unparsedFields,
+        array $extendedBy,
         bool $isMethod
     ): array {
         $fields = self::parseFields($unparsedFields, $isMethod);
         $result = [
             'name' => $name,
             'description' => htmlspecialchars_decode(strip_tags($description), ENT_QUOTES),
-            'fields' => $fields
+            'fields' => $fields,
+            'extended_by' => $extendedBy
         ];
         if ($isMethod) {
             $returnTypes = self::parseReturnTypes($description);
diff --git a/src/Common/StubCreator.php b/src/Common/StubCreator.php
index f1cf479..6fb1691 100644
--- a/src/Common/StubCreator.php
+++ b/src/Common/StubCreator.php
@@ -19,6 +19,7 @@ use Nette\PhpGenerator\Type;
 class StubCreator
 {
 
+
     /**
      * @var string
      */
@@ -115,13 +116,19 @@ class StubCreator
      * @param string $namespace
      * @return PhpFile[]
      */
-    #[ArrayShape(['Response' => "\Nette\PhpGenerator\PhpFile"])]
+    #[ArrayShape([
+        'Response' => "\Nette\PhpGenerator\PhpFile",
+        'TypeInterface' => "\Nette\PhpGenerator\ClassType"
+    ])]
     private function generateDefaultTypes(
         string $namespace
     ): array {
-        $file = new PhpFile;
-        $phpNamespace = $file->addNamespace($namespace);
-        $response = $phpNamespace->addClass('Response')
+        $interfaceFile = new PhpFile;
+        $interfaceNamespace = $interfaceFile->addNamespace($namespace);
+        $interface = $interfaceNamespace->addInterface('TypeInterface');
+        $responseFile = new PhpFile;
+        $responseNamespace = $responseFile->addNamespace($namespace);
+        $response = $responseNamespace->addClass('Response')
             ->setType('class');
         $response->addProperty('ok')
             ->setPublic()
@@ -141,8 +148,10 @@ class StubCreator
             ->setType(Type::STRING)
             ->setNullable(true)
             ->setValue(null);
+        $response->addImplement($namespace . '\\TypeInterface');
         return [
-            'Response' => $file
+            'Response' => $responseFile,
+            'TypeInterface' => $interfaceFile
         ];
     }
 
@@ -158,6 +167,7 @@ class StubCreator
             $phpNamespace = $file->addNamespace($namespace);
             $typeClass = $phpNamespace->addClass($type['name'])
                 ->setType('class');
+            $typeClass->addImplement($namespace . '\\TypeInterface');
             foreach ($type['fields'] as $field) {
                 ['types' => $fieldTypes, 'comments' => $fieldComments] = $this->parseFieldTypes(
                     $field['types'],