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exam/classes/GUID/GUID.php

@@ -2,12 +2,25 @@
 
 namespace Khofmann\GUID;
 
+/**
+ * Facade for GUID generators
+ */
 class GUID
 {
+  /**
+   * Private since facade.
+   */
   private function __construct()
   {
   }
 
+  /**
+   * Generate a UUID v4.
+   *
+   * @param mixed $data Optional data
+   *
+   * @return string UUID v4
+   */
   public static function v4($data = null): string
   {
     // Generate 16 bytes (128 bits) of random data or use the data passed into the function.