marketplacecorebitstampkrakenexMarketplaceplace_order()get_spot_price()get_name()get_balance()get_withdrawal_fee()withdrawal()BuyErrorTickerErrorWithdrawalErrorKrakenexMarketplaceBitstampMarketplacemarketplacemake_marketplace()KrakenWithdrawalConfigcoin: strtarget: strfee_limit_percent: floatKrakenConfigkey: strsecret: strprefer_fee_in_base_currency: boolwithdrawal: List[KrakenWithdrawalConfig]BitstampConfigusername: strkey: strsecret: strKrakenexInterfacequery_public()query_private()KrakenexMockccxtCCXTConfigexchange: strparameters: dictCCXTMarketplacePriceTradeAssetPair