Avoid extending class that has been already extended in classCreatedHook (#32)

Author: blackstark123

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.26] - 2020-06-16
+
+### Fixed
+- `PhpClass` setExtends if getExtends is null in `PhpBuilder`.
+
 ## [0.2.25] - 2020-01-10
 
 ### Added

composer.json

@@ -1,5 +1,5 @@
 {
-  "name": "swaggest/php-code-builder",
+  "name": "blackstark123/php-code-builder",
   "type": "library",
   "description": "Swaggest JSON-schema enabled PHP code builder",
   "keywords": ["library"],

src/JsonSchema/PhpBuilder.php

@@ -138,7 +138,9 @@ private function makeClass($schema, $path)
         if ($this->classCreatedHook !== null) {
             $this->classCreatedHook->process($class, $path, $schema);
         }
-        $class->setExtends(Palette::classStructureClass());
+        if (is_null($class->getExtends())) {
+            $class->setExtends(Palette::classStructureClass());
+        }
 
         $setupProperties = new PhpFunction('setUpProperties');
         $setupProperties