Added the setName function

composer.json

@@ -20,7 +20,7 @@
         "paquettg/string-encode": "~1.0.0",
         "php-http/httplug": "^2.1",
         "guzzlehttp/guzzle": "^7.0",
-        "guzzlehttp/psr7": "^1.6",
+        "guzzlehttp/psr7": "^1.6|^2.0",
         "myclabs/php-enum": "^1.7"
     },
     "require-dev": {

src/PHPHtmlParser/Dom/Node/Collection.php

@@ -130,7 +130,7 @@ public function offsetUnset($offset): void
      *
      * @return mixed
      */
-    public function offsetGet($offset)
+    public function offsetGet($offset): mixed
     {
         return $this->collection[$offset] ?? null;
     }

src/PHPHtmlParser/Dom/Tag.php

@@ -90,6 +90,16 @@ public function name(): string
         return $this->name;
     }
 
+    /**
+     * Sets the name of this tag.
+     */
+    public function setName(string $name): Tag
+    {
+        $this->name = $name;
+
+        return clone $this;
+    }
+
     /**
      * Sets the tag to be self closing.
      */