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dodo-contractV2/contracts/intf/IFeeRateModel.sol

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/*
Copyright 2020 DODO ZOO.
SPDX-License-Identifier: Apache-2.0
*/
pragma solidity 0.6.9;
pragma experimental ABIEncoderV2;
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interface IFeeRateModel {
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function getFeeRate(address trader) external view returns (uint256);
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}