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: update_highest_role.rb
    path of file: ./repos/gitlabhq/app/models/concerns
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module UpdateHighestRole
  extend A
    
  def update_highest_role
    return unless update_highest_role?

    run_after_commit_or_now do
      lease_key = "update_highest_role:#{update_highest_role_attribute}"
      lease = Gitlab::ExclusiveLease.new(lease_key, timeout: HIGHEST_ROLE_LEASE_TIMEOUT)

      if lease.try_obtain
        UpdateHighestRoleWorker.perform_in(HIGHEST_ROLE_JOB_DELAY, update_highest_role_attribute)
      else
        # use same logging as ExclusiveLeaseGuard
        Gitlab::AppLogger.error('Cannot obtain an exclusive lease. There must be another instance already in execution.')
      end
    end