owner_demo.rb

require 'active_record'

ActiveRecord::Base.method(:new).owner
#=> ActiveRecord::Inheritance::ClassMethods

ActiveRecord::Base.method(:create).owner
#=> ActiveRecord::Persistence::ClassMethods

ActiveRecord::Base.method(:update).owner
#=> ActiveRecord::Querying

ActiveRecord::Base.method(:trust).owner
#=> Kernel

class User < ActiveRecord::Base
end

User.method(:where).owner
#=> ActiveRecord::Querying

User.method(:human_attribute_name).owner
#=> ActiveModel::Translation