/* Copyright 2020 DODO ZOO. SPDX-License-Identifier: Apache-2.0 */ pragma solidity 0.6.9; interface IConstFeeRateModel { function init(uint256 feeRate) external; function getFeeRate(address) external view returns (uint256); } contract ConstFeeRateModel { uint256 public _FEE_RATE_; function init(uint256 feeRate) external { _FEE_RATE_ = feeRate; } function getFeeRate(address) external view returns (uint256) { return _FEE_RATE_; } }