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: 20170813054530_create_work_taggables.rb
    path of file: ./repos/annict/db/migrate
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class CreateWorkTaggables < ActiveRecord::Migration[5.1]
  def change
    create_table :work_taggables
    
  def change
    create_table :work_taggables do |t|
      t.integer :user_id, null: false
      t.integer :work_tag_id, null: false
      t.string :description
      t.timestamps null: false
    end

    add_index :work_taggables, :user_id
    add_index :work_taggables, :work_tag_id
    add_index :work_taggables, %i[user_id work_tag_id], unique: true

    add_foreign_key :work_taggables, :users
    add_foreign_key :work_taggables, :work_tags
  end