docs: def from_datetime(dt, machine_id=0):
          """
          Convert a datetime to an SPL `Timestamp`.
          
          Args:
             dt(datetime.datetime): Datetime to be converted.
             machine_id(int): Machine identifier.
  
          Returns:
               Timestamp: Datetime converted to Timestamp.
          """
          td = dt - Timestamp._EPOCH
          seconds = td.days * 3600 * 24
          seconds += td.seconds
          return Timestamp(seconds, td.microseconds*1000, machine_id)