def attach_instances(options = {})
      options = options.merge(auto_scaling_group_name: @name)
      resp = @client.attach_instances(options)
      resp.data
    end
def attach_instances(options = {})
      options = options.merge(auto_scaling_group_name: @name)
      resp = @client.attach_instances(options)
      resp.data
    end
@!group Actions
 @example Request syntax with placeholder values

   auto_scaling_group.attach_instances({
     instance_ids: ["XmlStringMaxLen19"],
   })
 @param [Hash] options ({})
 @option options [Array<String>] :instance_ids
   The IDs of the instances. You can specify up to 20 instances.
 @return [EmptyStructure]