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-rw-r--r--activemodel/lib/active_model/lint.rb3
1 files changed, 2 insertions, 1 deletions
diff --git a/activemodel/lib/active_model/lint.rb b/activemodel/lib/active_model/lint.rb
index 010eaeb170..34d9ac6c96 100644
--- a/activemodel/lib/active_model/lint.rb
+++ b/activemodel/lib/active_model/lint.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
module ActiveModel
module Lint
# == Active \Model \Lint \Tests
@@ -20,7 +22,6 @@ module ActiveModel
# to <tt>to_model</tt>. It is perfectly fine for <tt>to_model</tt> to return
# +self+.
module Tests
-
# Passes if the object's model responds to <tt>to_key</tt> and if calling
# this method returns +nil+ when the object is not persisted.
# Fails otherwise.