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-rw-r--r--activerecord/test/models/wheel.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activerecord/test/models/wheel.rb b/activerecord/test/models/wheel.rb
index cba2b3e518..e05fb64477 100644
--- a/activerecord/test/models/wheel.rb
+++ b/activerecord/test/models/wheel.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
class Wheel < ActiveRecord::Base
belongs_to :wheelable, polymorphic: true, counter_cache: true
end