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-rw-r--r--lib/gitlab/group_hierarchy.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/gitlab/group_hierarchy.rb b/lib/gitlab/group_hierarchy.rb
index 8fbfa1a86bf..c940ea7305e 100644
--- a/lib/gitlab/group_hierarchy.rb
+++ b/lib/gitlab/group_hierarchy.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module Gitlab
# Retrieving of parent or child groups based on a base ActiveRecord relation.
#