def_classed_elements

# File lib/rss/maker/base.rb, line 116
        def def_classed_elements(name, attribute, plural_class_name=nil,
                                 plural_name=nil, new_name=nil)
          plural_name ||= "#{name}s"
          new_name ||= name
          def_classed_element(plural_name, plural_class_name)
          local_variable_name = "_#{name}"
          new_value_variable_name = "new_value"
          additional_setup_code = nil
          if block_given?
            additional_setup_code = yield(local_variable_name,
                                          new_value_variable_name)
          end
          module_eval(            def #{name}              #{local_variable_name} = #{plural_name}.first              #{local_variable_name} ? #{local_variable_name}.#{attribute} : nil            end            def #{name}=(#{new_value_variable_name})              #{local_variable_name} =                #{plural_name}.first || #{plural_name}.new_#{new_name}              #{additional_setup_code}              #{local_variable_name}.#{attribute} = #{new_value_variable_name}            end, __FILE__, __LINE__ + 1)
        end