load_once_path?

# File activesupport/lib/active_support/dependencies.rb, line 488
    def load_once_path?(path)
      # to_s works around a ruby issue where String#start_with?(Pathname)
      # will raise a TypeError: no implicit conversion of Pathname into String
      autoload_once_paths.any? { |base| path.start_with?(base.to_s) }
    end