docs: def earliest_date(dates, full_date=False):
      """Return the earliest among the schema-compliant dates.
  
      This is a convenience wrapper around :ref:`PartialDate`, which should be
      used instead if more features are needed.
  
      Args:
          dates(list): List of dates from which oldest/earliest one will be returned
          full_date(bool): Adds month and/or day as "01" if they are missing
      Returns:
          str: Earliest date from provided list
      """
      min_date = min(PartialDate.loads(date) for date in dates)
      if not min_date.month and full_date:
          min_date.month = 1
      if not min_date.day and full_date:
          min_date.day = 1
      return min_date.dumps()