How to use the cryptofeed.exchanges.Coinbase function in cryptofeed

def main():
    f = FeedHandler()
    f.add_feed(Bitmex(max_depth=100, book_interval=1000, pairs=['XBTUSD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitmex").L2))
    f.add_feed(Bitfinex(pairs=['BTC-USD'], channels=[L3_BOOK], callbacks=DeltaBook("Bitfinex-L3").L3))
    f.add_feed(Bitfinex(max_depth=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitfinex-L2").L2))
    f.add_feed(Coinbase(pairs=['BTC-USD'], channels=[L3_BOOK], callbacks=DeltaBook("Coinbase-L3").L3))
    f.add_feed(Coinbase(max_depth=50, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Coinbase-L2").L2))
    f.add_feed(EXX(max_depth=25, book_interval=100, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("EXX").L2))
    f.add_feed(Gemini(max_depth=20, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Gemini").L2))
    f.add_feed(HitBTC(max_depth=10, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("HitBTC").L2))
    f.add_feed(Poloniex(max_depth=10, book_interval=100, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("Poloniex").L2))
    f.add_feed(Kraken(max_depth=10, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Kraken").L2))
    f.add_feed(OKCoin(max_depth=100, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("OKCoin").L2))
    f.add_feed(Bybit(max_depth=100, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bybit").L2))
    f.add_feed(Binance(max_depth=100, book_interval=30, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("Binance").L2))
    f.add_feed(Bitstamp(max_depth=100, book_interval=30, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitstamp").L2))
    f.add_feed(Bittrex(book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bittrex").L2))
    f.add_feed(Upbit(book_interval=2, pairs=['BTC-KRW'], channels=[L2_BOOK], callbacks=DeltaBook("Upbit").L2))
    f.add_feed(Blockchain(pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Blockchain-L2").L2))

    f.run()

def main():
    f = FeedHandler()
    f.add_feed(Bitmex(max_depth=100, book_interval=1000, pairs=['XBTUSD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitmex").L2))
    f.add_feed(Bitfinex(pairs=['BTC-USD'], channels=[L3_BOOK], callbacks=DeltaBook("Bitfinex-L3").L3))
    f.add_feed(Bitfinex(max_depth=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitfinex-L2").L2))
    f.add_feed(Coinbase(pairs=['BTC-USD'], channels=[L3_BOOK], callbacks=DeltaBook("Coinbase-L3").L3))
    f.add_feed(Coinbase(max_depth=50, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Coinbase-L2").L2))
    f.add_feed(EXX(max_depth=25, book_interval=100, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("EXX").L2))
    f.add_feed(Gemini(max_depth=20, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Gemini").L2))
    f.add_feed(HitBTC(max_depth=10, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("HitBTC").L2))
    f.add_feed(Poloniex(max_depth=10, book_interval=100, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("Poloniex").L2))
    f.add_feed(Kraken(max_depth=10, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Kraken").L2))
    f.add_feed(OKCoin(max_depth=100, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("OKCoin").L2))
    f.add_feed(Bybit(max_depth=100, book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bybit").L2))
    f.add_feed(Binance(max_depth=100, book_interval=30, pairs=['BTC-USDT'], channels=[L2_BOOK], callbacks=DeltaBook("Binance").L2))
    f.add_feed(Bitstamp(max_depth=100, book_interval=30, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bitstamp").L2))
    f.add_feed(Bittrex(book_interval=100, pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Bittrex").L2))
    f.add_feed(Upbit(book_interval=2, pairs=['BTC-KRW'], channels=[L2_BOOK], callbacks=DeltaBook("Upbit").L2))
    f.add_feed(Blockchain(pairs=['BTC-USD'], channels=[L2_BOOK], callbacks=DeltaBook("Blockchain-L2").L2))

    f.run()

def main():
    f = FeedHandler()

    f.add_feed(Coinbase(channels=[L2_BOOK, TRADES], pairs=['BTC-USD'], callbacks={L2_BOOK: BookElastic('http://localhost:9200', numeric_type=float), BOOK_DELTA: BookDeltaElastic('http://localhost:9200', numeric_type=float), TRADES: TradeElastic('http://localhost:9200', numeric_type=float)}))
    f.add_feed(Bitmex(channels=[FUNDING], pairs=['XBTUSD'], callbacks={FUNDING: FundingElastic('http://localhost:9200', numeric_type=float)}))

    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)}))

def writer(path):
    f = FeedHandler()
    f.add_feed(Coinbase(channels=[TRADES, TICKER], pairs=['BTC-USD'], callbacks={TRADES: TradeSocket(path), TICKER: TickerSocket(path)}))

    f.run()

def main():
    f = FeedHandler()
    f.add_feed(Coinbase(pairs=['BTC-USD'], channels=[TRADES], callbacks={TRADES: CustomAggregate(Callback(callback), window=30, init=init, aggregator=custom_agg)}))

    f.run()

def main():
    f = FeedHandler()
    f.add_feed(Bitmex(channels=[TRADES, FUNDING], pairs=['XBTUSD'], callbacks={TRADES: TradeArctic('cryptofeed-test'), FUNDING: FundingArctic('cryptofeed-test')}))
    f.add_feed(Bitfinex(channels=[TRADES], pairs=['BTC-USD'], callbacks={TRADES: TradeArctic('cryptofeed-test')}))
    f.add_feed(Coinbase(channels=[TICKER], pairs=['BTC-USD'], callbacks={TICKER: TickerArctic('cryptofeed-test')}))
    f.run()