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: chain.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/i18n-0.8.4/lib/i18n/backend
    
    the code of the file until where you have to start completion: module I18n
  module Backend
    # Backend that chains multiple other 
    
        def localize(locale, object, format = :default, options = {})
          backends.each do |backend|
            catch(:exception) do
              result = backend.localize(locale, object, format, options) and return result
            end
          end
          throw(:exception, I18n::MissingTranslation.new(locale, format, options))
        end