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: retirement_mixin.rb
    path of file: ./repos/manageiq/app/models/mixins
    
    the code of the file until where you have to start completion: module RetirementMixin
  extend ActiveSupport::Concern
  RETIREMENT_ERROR = 'error'.freeze
  RETIREMENT_INITIALIZING = 'initializing'.freeze
  RET
    
  def finish_retirement
    raise _("%{name} already retired") % {:name => name} if retired?

    $log.info("Finishing Retirement for [#{name}]")
    requester = retirement_requester
    mark_retired
    message = "#{self.class.base_model.name}: [id:<#{id}>, name:<#{name}>] with Retires On value: [#{retires_on.strftime("%x %R %Z")}], has been retired"
    $log.info("Calling audit event for: #{message} ")
    raise_audit_event(retired_event_name, message, requester)
    $log.info("Called audit event for: #{message} ")
  end