Perpetual Futures: AAABBB, e.g. "BTCUSDT"
Futures: AAABBB-FUT-YYYYMMDD, e.g. "BTCUSDT-FUT-20210326"
Alternatively, use the contract functions for futures, using the currency pair "BTCUSDT" as the underlying.

From the documentation. it looks like contract features are supported.