# File lib/fog/rackspace/requests/auto_scale/update_launch_config.rb, line 18
        def update_launch_config(group_id, options)
          group = self.data[:autoscale_groups][group_id]
          if group.nil?
            raise Fog::Rackspace::AutoScale::NotFound
          end

          config = group['launchConfiguration']

          config['args'] = options['args'] if options['args']
          config['type'] = options['type'] if options['type']

          request(:body => config)
        end