autoload_lib_once

# File railties/lib/rails/application/configuration.rb, line 485
      def autoload_lib_once(ignore))
        lib = root.join("lib")

        # Set as a string to have the same type as default autoload paths, for
        # consistency.
        autoload_once_paths << lib.to_s
        eager_load_paths << lib.to_s

        ignored_abspaths = Array.wrap(ignore).map { lib.join(_1) }
        Rails.autoloaders.once.ignore(ignored_abspaths)
      end