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: 20100221003655_create_forum_topics.rb
    path of file: ./repos/danbooru/db/migrate
    
    the code of the file until where you have to start completion: class CreateForumTopics < ActiveRecord::Migration[4.2]
  def self.up
    create_table :forum_topics do |t|
      t.column :creator_id, :integer, :null => false
      t.column :updater_id, :integer, :null => false
      t.column :title, :string, :null => false
      t.column :response_count, :integer, :null => false, :default => 0
      t.column :
    
  def self.up
    create_table :forum_topics do |t|
      t.column :creator_id, :integer, :null => false
      t.column :updater_id, :integer, :null => false
      t.column :title, :string, :null => false
      t.column :response_count, :integer, :null => false, :default => 0
      t.column :is_sticky, :boolean, :null => false, :default => false
      t.column :is_locked, :boolean, :null => false, :default => false
      t.column :is_deleted, :boolean, :null => false, :default => false
      t.column :text_index, "tsvector", :null => false
      t.timestamps
    end

    add_index :forum_topics, :creator_id

    execute "CREATE INDEX index_forum_topics_on_text_index ON forum_topics USING GIN (text_index)"
    execute "CREATE TRIGGER trigger_forum_topics_on_update BEFORE INSERT OR UPDATE ON forum_topics FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger('text_index', 'pg_catalog.english', 'title')"
  end