From f755e084d8b03a8911c33c3c076f68af8ab28882 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Wed, 19 Aug 2020 06:51:15 +0200
Subject: [PATCH] Document `MacOSRequirement`.

---
 Library/Homebrew/requirements/macos_requirement.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Library/Homebrew/requirements/macos_requirement.rb b/Library/Homebrew/requirements/macos_requirement.rb
index a723dda2c6..f8bdcf9150 100644
--- a/Library/Homebrew/requirements/macos_requirement.rb
+++ b/Library/Homebrew/requirements/macos_requirement.rb
@@ -2,6 +2,9 @@
 
 require "requirement"
 
+# A requirement on macOS.
+#
+# @api private
 class MacOSRequirement < Requirement
   fatal true