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: itunes_connect.rb
    path of file: ./repos/fastlane/produce/lib/produce
    
    the code of the file until where you have to start completion: require 'spaceship'
require 'spaceship/tunes/tunes'
require 'fastlane_core/languages'
require_relative 'module'

module Produce
  class ItunesConnect
    def run
      @full_bundle_identifier = app_identifier
      @full_bundle_identif
    
    def language
      @language = Produce.config[:language]

      unless FastlaneCore::Languages::ALL_LANGUAGES.include?(@language)
        mapped_language = Spaceship::Tunes::LanguageConverter.from_standard_to_itc_locale(@language)
        if mapped_language.to_s.empty?
          message = [
            "Sending language name is deprecated. Could not map '#{@language}' to a locale.",
            "Please enter one of available languages: #{FastlaneCore::Languages::ALL_LANGUAGES}"
          ].join("\n")
          UI.user_error!(message)
        end