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: destroy_service.rb
    path of file: ./repos/gitlabhq/app/services/work_items/parent_links
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module WorkItems
  module ParentLink
    
      def initialize(link, user, params = {})
        @link = link
        @current_user = user
        @params = params
        @parent = link.work_item_parent
        @child = link.work_item
      end