execute

# File activemodel/lib/active_model/attribute_methods.rb, line 368
          def execute
            @owner.module_eval(@sources.join(";"), @path, @line - 1)
            @renames.each do |old_name, new_name|
              @owner.alias_method new_name, old_name
              @owner.undef_method old_name
            end
          end