用Ruby用lambda打印s3存储桶上传对象键？

require 'tencentcloud-sdk-common'
require 'tencentcloud-sdk-s3'

include TencentCloud::Common
include TencentCloud::S3::V20180813

def main_handler(event, context)
    # 实例化S3客户端
    client = Client.new(
        Credential.new(
            ENV['TENCENTCLOUD_SECRET_ID'],
            ENV['TENCENTCLOUD_SECRET_KEY']
        ),
        'ap-guangzhou'
    )

    # 设置请求参数
    req = ListBucketsRequest.new

    # 发送请求并获取响应
    resp = client.ListBuckets(req)

    # 打印S3存储桶中的对象键
    resp.Buckets.each do |bucket|
        puts "Bucket Name: #{bucket.Name}"
        puts "Object Keys:"
        resp.Keys.each do |key|
            puts key
        end
        puts "-------------------------"
    end
end