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: 20130901115749_revised_terms.rb
    path of file: ./repos/mushroom-observer/db/migrate
    
    the code of the file until where you have to start completion: class RevisedTerms < ActiveRecord::Migration
  def self.up
    drop_table :terms
    create_table :terms, options: "ENGINE=InnoDB DEFAULT CHAR
    
  def self.down
    remove_column :rss_logs, :term_id
    drop_table :terms
    create_table :terms do |t|
      t.string "name", limit: 1024
      t.text "description"
      t.integer "image_id"
      t.timestamps
    end
    drop_table :images_terms
    drop_table :terms_versions
  end