module Docs  class Request < Typhoeus::Request    include Instrumentable     DEFAULT_OPTIONS = {      followlocation: true,      headers: { 'User-Agent' => 'DevDocs' }    }     def self.run(*args, &block)      request = new(*args)      request.on_complete(&block) if block      request.run    end     def initialize(url, options = {})      super url.to_s, DEFAULT_OPTIONS.merge(options)    end     def response=(value)      value.extend Response if value      super    end     def run      instrument 'response.request', url: base_url do |payload|        response = super        payload[:response] = response        response      end    end  endend