def fetch_order_book(self, symbol, limit=None, params={}):
    self.load_markets()
    response = self.publicGetMarketsSymbolDepth(self.extend({'symbol': self.market_id(symbol)}, params))
    return self.parse_order_book(response['data'], None, 'bids', 'asks', 'price', 'amount')
def fetch_order_book(self, symbol, limit=None, params={}):
    self.load_markets()
    response = self.publicGetMarketsSymbolDepth(self.extend({'symbol': self.market_id(symbol)}, params))
    return self.parse_order_book(response['data'], None, 'bids', 'asks', 'price', 'amount')