    # File lib/active_record/dirty.rb, line 39
        def self.included(base)
          base.attribute_method_suffix *DIRTY_SUFFIXES
          base.alias_method_chain :write_attribute, :dirty
          base.alias_method_chain :save,            :dirty
          base.alias_method_chain :save!,           :dirty
          base.alias_method_chain :update,          :dirty
          base.alias_method_chain :reload,          :dirty

          base.superclass_delegating_accessor :partial_updates
          base.partial_updates = true

          base.send(:extend, ClassMethods)
        end