    # File lib/fog/cdn.rb, line 8
        def self.new(attributes)
          attributes = attributes.dup # prevent delete from having side effects
          case provider = attributes.delete(:provider).to_s.downcase.to_sym
          when :aws
            require 'fog/aws/cdn'
            Fog::CDN::AWS.new(attributes)
          when :hp
            require 'fog/hp/cdn'
            Fog::CDN::HP.new(attributes)
          when :rackspace
            require 'fog/rackspace/cdn'
            Fog::CDN::Rackspace.new(attributes)
          else
            raise ArgumentError.new("#{provider} is not a recognized cdn provider")
          end
        end