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-rw-r--r--activesupport/lib/active_support/proxy_object.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/proxy_object.rb b/activesupport/lib/active_support/proxy_object.rb
index 20a0fd8e62..0965fcd2d9 100644
--- a/activesupport/lib/active_support/proxy_object.rb
+++ b/activesupport/lib/active_support/proxy_object.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActiveSupport
# A class with no predefined methods that behaves similarly to Builder's
# BlankSlate. Used for proxy classes.