How to permanently delete versioned objects from AWS S3

Amazon's explanation of deleting a versioned object and the SDK documentation do not give an example of permanently deleting a versioned object. Here's how to do it.

require 'aws-sdk'

s3 = Aws::S3::Resource.new(
  region: 'us-east-1',
  access_key_id: ACCESS_KEY_ID,
  secret_access_key: SECRET_ACCESS_KEY
)
bucket = s3.bucket('my-versioned-bucket')

bucket.objects.each do |object_summary|
  o = bucket.object object_summary.key
  # this is the secret: specify the version while deleting
  o.delete version_id: o.version_id
end

If you don't specify the version, you get a delete marker, which you can proceed to delete infinite times and it will not go away :)