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: 20170704165711_add_user_bio_and_token.rb
    path of file: ./repos/plots2/db/migrate
    
    the code of the file until where you have to start completion: # will only work in Ruby 1.9+:
class String
   def multibyte?
     chars.count < bytes.count
   end
end

class AddUserBioAndToken < ActiveRecord::Migration[5.1]

  def up
    add_column :rusers, :bio, :text, limit: 2147483647
    add_column :rusers, :token, :stri
    
  def up
    add_column :rusers, :bio, :text, limit: 2147483647
    add_column :rusers, :token, :string
    add_column :rusers, :status, :integer, default: 0
    
    # copy bios into new fields for non-spam users
    DrupalUsers.where('status != 0').each do |u|
      unless u.name.multibyte? # exclude non-latin names
        user = u.user
        if user and defined? :u.status then
          user.status = u.status
          user.bio = DrupalProfileValue.find_by_uid(user.id, conditions: { fid: 7 }) || ''
          user.token = SecureRandom.uuid
          user.save({})
        end
      end