docs: def auto_need(form):
      """Automatically ``need()`` the relevant Fanstatic resources for a form.
  
      This function automatically utilises libraries in the ``js.*`` namespace
      (such as ``js.jquery``, ``js.tinymce`` and so forth) to allow Fanstatic
      to better manage these resources (caching, minifications) and avoid
      duplication across the rest of your application.
      """
  
      requirements = form.get_widget_requirements()
  
      for library, version in requirements:
          resources = resource_mapping[library]
          if not isinstance(resources, list):  # pragma: no cover (bw compat only)
              resources = [resources]
          for resource in resources:
              resource.need()