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-rw-r--r--activerecord/lib/active_record/define_callbacks.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/define_callbacks.rb b/activerecord/lib/active_record/define_callbacks.rb
index 7d955a24be..291ebd3678 100644
--- a/activerecord/lib/active_record/define_callbacks.rb
+++ b/activerecord/lib/active_record/define_callbacks.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
module ActiveRecord
# This module exists because `ActiveRecord::AttributeMethods::Dirty` needs to
# define callbacks, but continue to have its version of `save` be the super