From 82cd6f5a44fd2144df09c28d8f5d7912a56b47d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Borys=20=C5=BBmuda?= <rudashi@gmail.com>
Date: Fri, 27 Sep 2024 08:03:31 +0200
Subject: [PATCH] docs: Added `Set::keys()` documentation

---
 docs/Set.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/docs/Set.md b/docs/Set.md
index 10bb4bf..6b42e8f 100644
--- a/docs/Set.md
+++ b/docs/Set.md
@@ -11,6 +11,7 @@ The Set object holds only unique values of any type.
 - [`Set::entries()`](#setentries)
 - [`Set::forEach()`](#setforeach)
 - [`Set::has()`](#sethas)
+- [`Set::keys()`](#setkeys)
 - [`Set::values()`](#setvalues)
 - [`Set::size`](#setsize)
 
@@ -128,6 +129,20 @@ $set->has(6);
 // false
 ```
 
+### Set::keys()
+
+The `keys()` method is exactly equivalent to the [values()](#setvalues) method.
+
+```php
+$set = new Set(['foo' => 'bar']);
+
+$iterator = $set->keys();
+// [object SetIterator]
+
+$iterator->current();
+// 'foo'
+```
+
 ### Set::values()
 
 The `values()` method returns a new `SetIterator` instance that contain the values of each element of the Set.