ExtensionInfo conversions what have I done

ext/custom_html_headers/info.php

@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Name: Custom HTML Headers
+ * Author: Drudex Software <support@drudexsoftware.com>
+ * Link: http://www.drudexsoftware.com
+ * License: GPLv2
+ * Description: Allows admins to modify & set custom &lt;head&gt; content
+ * Documentation:
+ *
+ */
+class custom_html_headersInfo extends ExtensionInfo
+{
+    public const KEY = "custom_html_headers";
+
+    public $key = self::KEY;
+    public $name = "Custom HTML Headers";
+    public $url = "http://www.drudexsoftware.com";
+    public $authors = ["Drudex Software"=>"support@drudexsoftware.com"];
+    public $license = self::LICENSE_GPLV2;
+    public $description = "Allows admins to modify & set custom &lt;head&gt; content";
+    public $documentation =
+"When you go to board config you can find a block named Custom HTML Headers.
+In that block you can simply place any thing you can place within &lt;head&gt;&lt;/head&gt;
+
+This can be useful if you want to add website tracking code or other javascript.
+NOTE: Only use if you know what you're doing.
+
+You can also add your website name as prefix or suffix to the title of each page on your website.";
+}