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: 20200911160756_create_action_mailbox_tables.action_mailbox.rb
    path of file: ./repos/madmin/test/dummy/db/migrate
    
    the code of the file until where you have to start completion: # This migration comes from action_mailbox (originally 2018091716400
    
  def change
    create_table :action_mailbox_inbound_emails do |t|
      t.integer :status, default: 0, null: false
      t.string :message_id, null: false
      t.string :message_checksum, null: false

      t.timestamps

      t.index [:message_id, :message_checksum], name: "index_action_mailbox_inbound_emails_uniqueness", unique: true
    end
  end