How to use the cryptofeed.callback.TradeCallback function in cryptofeed

def main():
    f = FeedHandler()

    f.add_feed(Coinbase(config={TRADES: ['BTC-USD']}, callbacks={TRADES: [TradeCallback(trade), TradeCallback(trade2)]}))

    f.run()

"""Load.
        """
        super().load(is_initialize_instmt=False, **kwargs)
        self._feed_handler = FeedHandler()
        self._instrument_mapping = self._create_instrument_mapping()
        try:
            exchange = getattr(
                cryptofeed_exchanges,
                self._get_exchange_name(self._name))
        except AttributeError as e:
            raise ImportError(
                'Cannot load exchange %s from websocket' % self._name)

        callbacks = {
            L2_BOOK: BookCallback(self._update_order_book_callback),
            TRADES: TradeCallback(self._update_trade_callback)
        }

        if self._name.lower() == 'poloniex':
            self._feed_handler.add_feed(
                exchange(
                    channels=list(self._instrument_mapping.keys()),
                    callbacks=callbacks))
        else:
            self._feed_handler.add_feed(
                exchange(
                    pairs=list(self._instrument_mapping.keys()),
                    channels=list(callbacks.keys()),
                    callbacks=callbacks))

def main():
    f = FeedHandler()
    # Note: EXX is extremely unreliable - sometimes a connection can take many many retries
    # f.add_feed(EXX(pairs=['BTC-USDT'], channels=[L2_BOOK, TRADES], callbacks={L2_BOOK: BookCallback(book), TRADES: TradeCallback(trade)}))
    f.add_feed(Binance(pairs=['BTC-USDT'], channels=[TRADES, TICKER, L2_BOOK], callbacks={L2_BOOK: BookCallback(book), TRADES: TradeCallback(trade), TICKER: TickerCallback(ticker)}))
    f.add_feed(COINBASE, pairs=['BTC-USD'], channels=[TICKER], callbacks={TICKER: TickerCallback(ticker)})
    f.add_feed(Coinbase(pairs=['BTC-USD'], channels=[TRADES], callbacks={TRADES: TradeCallback(trade)}))
    f.add_feed(Coinbase(config={L2_BOOK: ['BTC-USD', 'ETH-USD'], TRADES: ['ETH-USD', 'BTC-USD']}, callbacks={TRADES: TradeCallback(trade), L2_BOOK: BookCallback(book)}))

    f.run(start_loop=False)

    loop = asyncio.get_event_loop()
    loop.create_task(aio_task())
    loop.run_forever()

def main():
    set_pair_separator('/')
    f = FeedHandler()
    f.add_feed(COINBASE, pairs=['BTC/USD'], channels=[TICKER], callbacks={TICKER: TickerCallback(ticker)})
    f.add_feed(Gemini(pairs=['BTC/USD'], channels=[TRADES], callbacks={TRADES: TradeCallback(trade)}))
    f.add_feed(Coinbase(config={L2_BOOK: ['ETH/USD'], L3_BOOK: ['BTC/USD']}, callbacks={L3_BOOK: BookCallback(book), L2_BOOK: BookCallback(book)}))

    f.run()

def main():
    f = FeedHandler()
    # Note: EXX is extremely unreliable - sometimes a connection can take many many retries
    # f.add_feed(EXX(pairs=['BTC-USDT'], channels=[L2_BOOK, TRADES], callbacks={L2_BOOK: BookCallback(book), TRADES: TradeCallback(trade)}))
    f.add_feed(Binance(pairs=['BTC-USDT'], channels=[TRADES, TICKER, L2_BOOK], callbacks={L2_BOOK: BookCallback(book), TRADES: TradeCallback(trade), TICKER: TickerCallback(ticker)}))
    f.add_feed(COINBASE, pairs=['BTC-USD'], channels=[TICKER], callbacks={TICKER: TickerCallback(ticker)})
    f.add_feed(Coinbase(pairs=['BTC-USD'], channels=[TRADES], callbacks={TRADES: TradeCallback(trade)}))
    f.add_feed(Coinbase(config={L2_BOOK: ['BTC-USD', 'ETH-USD'], TRADES: ['ETH-USD', 'BTC-USD']}, callbacks={TRADES: TradeCallback(trade), L2_BOOK: BookCallback(book)}))
    f.add_feed(Bitfinex(pairs=['BTC-USD'], channels=[L2_BOOK], callbacks={L2_BOOK: BookCallback(book)}))
    f.add_feed(Poloniex(pairs=['BTC-USDT', 'BTC-USDC'], channels=[TICKER, TRADES, VOLUME], callbacks={VOLUME: volume, TICKER: TickerCallback(ticker), TRADES: TradeCallback(trade)}))
    f.add_feed(Poloniex(config={TRADES: ['DOGE-BTC', 'ETH-BTC'], TICKER: ['ETH-BTC'], L2_BOOK: ['LTC-BTC']}, callbacks={TRADES: TradeCallback(trade), TICKER: TickerCallback(ticker), L2_BOOK: BookCallback(book)}))
    f.add_feed(GEMINI, config={L2_BOOK: ['BTC-USD', 'ETH-USD'], TRADES: ['ETH-USD', 'BTC-USD']}, callbacks={TRADES: TradeCallback(trade), L2_BOOK: BookCallback(book)})
    f.add_feed(HitBTC(channels=[TRADES], pairs=['BTC-USD'], callbacks={TRADES: TradeCallback(trade)}))
    f.add_feed(HitBTC(channels=[L2_BOOK], pairs=['BTC-USD'], callbacks={L2_BOOK: BookCallback(book)}))

    f.add_feed(Bitstamp(channels=[L2_BOOK, TRADES], pairs=['BTC-USD'], callbacks={L2_BOOK: BookCallback(book), TRADES: TradeCallback(trade)}))
    bitmex_symbols = Bitmex.get_active_symbols()
    f.add_feed(Bitmex(channels=[OPEN_INTEREST], pairs=['XBTUSD'], callbacks={OPEN_INTEREST: oi}))
    f.add_feed(Bitmex(channels=[TRADES], pairs=bitmex_symbols, callbacks={TRADES: TradeCallback(trade)}))
    f.add_feed(Bitmex(pairs=['XBTUSD'], channels=[FUNDING, TRADES], callbacks={FUNDING: FundingCallback(funding), TRADES: TradeCallback(trade)}))

    f.add_feed(Bitfinex(pairs=['BTC'], channels=[FUNDING], callbacks={FUNDING: FundingCallback(funding)}))
    f.add_feed(Bitmex(pairs=['XBTUSD'], channels=[L2_BOOK], callbacks={L2_BOOK: BookCallback(book)}))
    f.add_feed(Kraken(config={TRADES: ['BTC-USD'], TICKER: ['ETH-USD']}, callbacks={TRADES: TradeCallback(trade), TICKER: TickerCallback(ticker)}))

    config = {TRADES: ['BTC-USDT', 'ETH-USDT'], L2_BOOK: ['BTC-USDT']}
    f.add_feed(Huobi(config=config, callbacks={TRADES: TradeCallback(trade), L2_BOOK: BookCallback(book)}))
    config = {L2_BOOK: ['BTC_CQ', 'BTC_NQ']}
    f.add_feed(HuobiDM(config=config, callbacks={TRADES: TradeCallback(trade), L2_BOOK: BookCallback(book)}))