require 'active_support/notifications' module Docs  module Instrumentable    def self.extended(base)      base.send :extend, Methods    end     def self.included(base)      base.send :include, Methods    end     module Methods      def instrument(*args, &block)        ActiveSupport::Notifications.instrument(*args, &block)      end       def subscribe(*args, &block)        ActiveSupport::Notifications.subscribe(*args, &block)      end    end  endend