docs: def build_rrule_from_recurrences_rrule(rule):
      """
      Build rrule dictionary for vRecur class from a django_recurrences rrule.
  
      django_recurrences is a popular implementation for recurrences in django.
      https://pypi.org/project/django-recurrence/
      this is a shortcut to interface between recurrences and icalendar.
      """
      from recurrence import serialize
      line = serialize(rule)
      if line.startswith('RRULE:'):
          line = line[6:]
      return build_rrule_from_text(line)