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: release.rb
    path of file: ./repos/gitlabhq/lib/gitlab/ci/variables/builder
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module Ci
    module Variables
      class Builder
        class Release
          include Gitlab::Utils::StrongMemoize

          attr_reader :release

          DESCRIPTION_LIM
    
          def variables
            strong_memoize(:variables) do
              ::Gitlab::Ci::Variables::Collection.new.tap do |variables|
                next variables unless release

                if release.description
                  variables.append(
                    key: 'CI_RELEASE_DESCRIPTION',
                    value: release.description.truncate(DESCRIPTION_LIMIT),
                    raw: true)
                end
              end
            end