Class methods in the `class_methods` blocks are wrongly appeared in the doc

It is wrongly appeared as instance public methods in the doc.

http://api.rubyonrails.org/v5.1.6/classes/ActionCable/Channel/Callbacks.html
http://api.rubyonrails.org/v5.1.6/classes/ActiveRecord/Timestamp.html

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/timestamp.rb b/activerecord/lib/active_record/timestamp.rb
index 5da3759e5a..54aa7aca2c 100644
--- a/activerecord/lib/active_record/timestamp.rb
+++ b/activerecord/lib/active_record/timestamp.rb
@@ -52,7 +52,7 @@ module ActiveRecord
       clear_timestamp_attributes
     end
 
-    class_methods do
+    module ClassMethods # :nodoc:
       private
         def timestamp_attributes_for_create_in_model
           timestamp_attributes_for_create.select { |c| column_names.include?(c) }