# File lib/fog/aws/models/auto_scaling/configuration.rb, line 37
        def save
          requires :id
          requires :image_id
          requires :instance_type

          options = Hash[self.class.aliases.map { |key, value| [key, send(value)] }]
          options.delete_if { |key, value| value.nil? }
          connection.create_launch_configuration(image_id, instance_type, id, options) #, listeners.map{|l| l.to_params})

          # reload instead of merge attributes b/c some attrs (like HealthCheck)
          # may be set, but only the DNS name is returned in the create_load_balance
          # API call
          reload
        end