You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: delete.rb
    path of file: ./repos/mastodon/app/lib/activitypub/activity
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class ActivityPub::Activity::Delete < ActivityPub::Activity
  def perform
    if @account.uri == object_uri
      delete_person
    else
      delete_note
    end
  end

  private

  def delete_person
    with_redis_lock("delete_in_progress:#{@account.id}", autorelease: 2.hours, raise_on_failure: false) do
      DeleteAccountService.new.call(@account, reserve_username: false, skip_activitypub: true)
    end
  end

  def delete_note
    return if object_uri.nil?

    with_redis_lock("delete_status_in_progress:#{object_uri}", raise_on_failure: false) do
      unless non_matching_uri_hosts?(@account.uri, object_uri)
        # This lock ensures a concurrent `ActivityPub::Activity::Create` either
        # does not create a status at all, or has finished saving it to the
        # database before we try to load it.
        # Without the lock, `delete_later!` could be cal
    
  def delete_note
    return if object_uri.nil?

    with_redis_lock("delete_status_in_progress:#{object_uri}", raise_on_failure: false) do
      unless non_matching_uri_hosts?(@account.uri, object_uri)
        # This lock ensures a concurrent `ActivityPub::Activity::Create` either
        # does not create a status at all, or has finished saving it to the
        # database before we try to load it.
        # Without the lock, `delete_later!` could be called after `delete_arrived_first?`
        # and `Status.find` before `Status.create!`
        with_redis_lock("create:#{object_uri}") { delete_later!(object_uri) }

        Tombstone.find_or_create_by(uri: object_uri, account: @account)
      end

      @status   = Status.find_by(uri: object_uri, account: @account)
      @status ||= Status.find_by(uri: @object['atomUri'], account: @account) if @object.is_a?(Hash) && @object['atomUri'].present?

      return if @status.nil?

      forwarder.forward! if forwarder.forwardable?
      delete_now!
    end
  end