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: background_migration_record_spec.rb
    path of file: ./repos/gitlabhq/spec/rubocop/cop/migration
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'rubocop_spec_helper'
require_relative '../../../../rubocop/cop/migration/background_migration_record'

RSpec.describe RuboCop::Cop::Migra
    
          def define_model(table_name)
            Class.new(ActiveRecord::Base) do
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Don't use or inherit from ActiveRecord::Base.[...]
              self.table_name = table_name
              self.inheritance_column = :_type_disabled
            end
          end