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: routes_generator.rb
    path of file: ./repos/administrate/lib/generators/administrate/routes
    
    the code of the file until where you have to start completion: if defined?(Zeitwerk)
  Zeitwerk::Lo
    
      def warn_about_invalid_models
        invalid_dashboard_models.each do |model|
          puts "WARNING: Unable to generate a dashboard for #{model}."
          if namespaced_models.include?(model)
            puts "       - Administrate does not yet support namespaced models."
          end
          if models_without_tables.include?(model)
            puts "       - It is not connected to a database table."
            puts "         Make sure your database migrations are up to date."
          end
        end