class ActiveStorage::Service::AzureStorageService

def delete_prefixed(prefix)
  instrument :delete_prefixed, prefix: prefix do
    marker = nil
    loop do
      results = client.list_blobs(container, prefix: prefix, marker: marker)
      results.each do |blob|
        client.delete_blob(container, blob.name)
      end
      break unless marker = results.continuation_token.presence
    end
  end
end