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-rw-r--r--app/controllers/concerns/group_tree.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/app/controllers/concerns/group_tree.rb b/app/controllers/concerns/group_tree.rb
index c363cad0ffa..4f56346832c 100644
--- a/app/controllers/concerns/group_tree.rb
+++ b/app/controllers/concerns/group_tree.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module GroupTree
# rubocop:disable Gitlab/ModuleWithInstanceVariables
# rubocop: disable CodeReuse/ActiveRecord