Remove useless codes in hyperf/utils (#5810)

Author: huangdijia

tests/PhpDocReaderTest.php

@@ -12,7 +12,7 @@
 namespace HyperfTest\CodeParser;
 
 use Hyperf\CodeParser\PhpDocReader;
-use HyperfTest\Utils\Stub\DocFoo;
+use HyperfTest\CodeParser\Stub\DocFoo;
 use PHPUnit\Framework\Attributes\CoversNothing;
 use PHPUnit\Framework\TestCase;
 use ReflectionClass;
@@ -22,6 +22,10 @@
  * @coversNothing
  */
 #[CoversNothing]
+/**
+ * @internal
+ * @coversNothing
+ */
 class PhpDocReaderTest extends TestCase
 {
     public function testGetReturnClass()

tests/Stub/DocFoo.php

@@ -0,0 +1,52 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * This file is part of Hyperf.
+ *
+ * @link     https://www.hyperf.io
+ * @document https://hyperf.wiki
+ * @contact  group@hyperf.io
+ * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
+ */
+namespace HyperfTest\CodeParser\Stub;
+
+class DocFoo
+{
+    public function getBuiltinInt(): ?int
+    {
+        return 1;
+    }
+
+    /**
+     * @return string
+     */
+    public function getString()
+    {
+        return uniqid();
+    }
+
+    /**
+     * @return int|string
+     */
+    public function getStringOrInt()
+    {
+        return uniqid();
+    }
+
+    /**
+     * @return DocFoo
+     */
+    public function getSelf()
+    {
+        return $this;
+    }
+
+    /**
+     * @return bool|DocFoo
+     */
+    public function getSelfOrNot()
+    {
+        return $this;
+    }
+}