# File lib/fog/rackspace/dns.rb, line 88
        def initialize(options={})
          @rackspace_api_key = options[:rackspace_api_key]
          @rackspace_username = options[:rackspace_username]
          @rackspace_auth_url = options[:rackspace_auth_url]
          @connection_options = options[:connection_options] || {}
          @rackspace_endpoint = Fog::Rackspace.normalize_url(options[:rackspace_dns_url] || options[:rackspace_dns_endpoint])
          @rackspace_region = options[:rackspace_region]

          authenticate

          deprecation_warnings(options)

          @persistent = options[:persistent] || false
          @connection = Fog::Core::Connection.new(endpoint_uri.to_s, @persistent, @connection_options)
        end