reset_column_information_and_inheritable_attributes_for_all_subclasses

# File activerecord/lib/active_record/base.rb, line 1287
      def reset_column_information_and_inheritable_attributes_for_all_subclasses#:nodoc:
        subclasses.each { |klass| klass.reset_inheritable_attributes; klass.reset_column_information }
      end