docs: def time(arg):
      """Converts the value into a unix time (seconds since unix epoch).
  
      For example:
          convert.time(datetime.now())
          # '1409810596'
  
      :param arg: The time.
      :type arg: datetime.datetime or int
      """
      # handle datetime instances.
      if _has_method(arg, "timetuple"):
          arg = _time.mktime(arg.timetuple())
  
      if isinstance(arg, float):
          arg = int(arg)
  
      return str(arg)