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: navigation_system_test.rb
    path of file: ./repos/workarea/storefront/test/system/workarea/storefront
    
    the code of the file until where you have to start completion: require 'test_helper'

module Workarea
  module Storefront
    class NavigationSystemTest < Workarea::SystemTest
      include Storefront::SystemTest
      include BreakpointHelpers
      setup :set_navigation_menu

      def set_navigation_menu
        first_level = create_taxon
    
      def set_navigation_menu
        first_level = create_taxon(
          name: 'First Level',
          url: 'http://example.com'
        )

        second_level = first_level.children.create!(
          name: 'Second Level',
          url: 'http://www.example.com'
        )

        menu = create_menu(taxon: first_level)

        content = Content.for(menu)
        content.blocks.create!(
          type: 'taxonomy',
          data: { 'start' => second_level.id }
        )
      end