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: 20090123212834_add_visible_on_profile_to_tag_subscriptions.rb
    path of file: ./repos/moebooru/db/migrate
    
    the code of the file until where you have to start completion: class AddVisibleOnProfileToTagSubscriptions < ActiveRecord::Migration[5.1]
  def self.up
    re
    
  def self.up
    remove_index :favorite_tags, :name
    remove_index :favorite_tags, :user_id
    remove_foreign_key :favorite_tags, "favorite_tags_user_id_fkey"
    rename_table :favorite_tags, :tag_subscriptions
    add_index :tag_subscriptions, :name
    add_index :tag_subscriptions, :user_id
    add_foreign_key :tag_subscriptions, :user_id, :users, :id, on_delete: :cascade
    add_column :tag_subscriptions, :is_visible_on_profile, :boolean, null: false, default: true
  end