name 'Timeframe' is not defined

[AlexKorwin]

When I try to use this library, the following error appears:

from finam import Exporter, Market, LookupComparator

exporter = Exporter()
ticker = 'USDRUB_TOD'
rub = exporter.lookup(name = ticker, market = Market.CURRENCIES)
data = exporter.download(rub.index[0],
                                           market = Market.CURRENCIES,
                                           timeframe=Timeframe.MINUTES1,
                                           start_date=datetime.date(2020, 1, 31),
                                           end_date=datetime.date(2020, 2, 1))

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
C:\Users\8523~1\AppData\Local\Temp/ipykernel_67512/432054812.py in <module>
     11 data = exporter.download(rub.index[0],
     12                          market = Market.CURRENCIES,
---> 13                          timeframe=Timeframe.MINUTES1,
     14                          start_date=datetime.date(2020, 1, 31),
     15                          end_date=datetime.date(2020, 2, 1))

NameError: name 'Timeframe' is not defined