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: worker.rb
    path of file: ./repos/gitlabhq/vendor/gems/sidekiq-reliable-fetch/tests/reliability
    
    the code of the file until where you have to start completion: # frozen_strin
    
  def perform
    # To mimic long running job and to increase the probability of losing the job
    sleep 1

    Sidekiq.redis do |redis|
      redis.lpush(REDIS_FINISHED_LIST, jid)
    end
  end