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: 20240207144547_update_user_attributes.rb
    path of file: ./repos/zammad/db/migrate
    
    the code of the file until where you have to start completion: # Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

class Updat
    
  def migrate_group_ids_attribute
    group_ids_attribute = user_attribute('group_ids')
    group_ids_attribute.screens[:invite_agent] ||= {}
    group_ids_attribute.screens[:invite_agent]['-all-'] ||= {}
    group_ids_attribute.screens[:invite_agent]['-all-']['null'] = true
    group_ids_attribute.save!(validate: false)
  end