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: issue.rb
    path of file: ./repos/gitlabhq/qa/qa/resource
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module QA
  module Resource
    class Issue < Issuable
      attr_writer :milestone, :template, :weight

      attribute :project do
        Project.fabricate! do |resource|
          resource.name = 'project-for-issue
    
      def set_issue_assignees(assignee_ids:)
        put_body = { assignee_ids: assignee_ids }
        response = put Runtime::API::Request.new(api_client, api_put_path).url, put_body

        unless response.code == HTTP_STATUS_OK
          raise(
            ResourceUpdateFailedError,
            "Could not update issue assignees to #{assignee_ids}. Request returned (#{response.code}): `#{response}`."
          )
        end