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: connection.rb
    path of file: ./repos/violet_rails/app/channels/application_cable
    
    the code of the file until where you have to start completion: module ApplicationCable
  class Connection < ActionCable::Connection::Base
    iden
    
    def bind_user_to_client(client)
      user = env['warden']&.user
      if user
        client.user_id = user.id
      else
        nil
      end