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: auth_job_finder.rb
    path of file: ./repos/gitlabhq/app/finders/ci
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
module Ci
  class AuthJobFinder
    AuthError = C
    
    def execute!
      find_job_by_token.tap do |job|
        next unless job

        validate_job!(job)

        if job.user
          job.user.set_ci_job_token_scope!(job)
        end
      end