使用Ruby SDK，我如何获得现有AutoScalingGroup的句柄？

require 'aws-sdk-autoscaling'

Aws.config.update({
  region: 'your_region',
  credentials: Aws::Credentials.new('your_access_key_id', 'your_secret_access_key')
})

autoscaling = Aws::AutoScaling::Client.new

response = autoscaling.describe_auto_scaling_groups

response.auto_scaling_groups.each do |group|
  if group.auto_scaling_group_name == 'your_group_name'
    # 找到了目标组
    group_handle = group
    break
  end
end

group_handle.min_size # 获取组的最小实例数
group_handle.max_size # 获取组的最大实例数