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: 20220619124827_install_motor_admin.rb
    path of file: ./repos/chordbook/db/migrate
    
    the code of the file until where you have to start completion: class InstallMotorAdmin < ActiveRecord::Migration[7.0]
  def self.up
    create_table :motor_queries do |t|

    
  def self.down
    drop_table :motor_audits
    drop_table :motor_alert_locks
    drop_table :motor_alerts
    drop_table :motor_forms
    drop_table :motor_taggable_tags
    drop_table :motor_tags
    drop_table :motor_resources
    drop_table :motor_configs
    drop_table :motor_queries
    drop_table :motor_dashboards
  end