contract IProtocolFees {

    // Logs updates to the protocol fee multiplier.
    event ProtocolFeeMultiplier(uint256 oldProtocolFeeMultiplier, uint256 updatedProtocolFeeMultiplier);

    // Logs updates to the protocolFeeCollector address.
    event ProtocolFeeCollectorAddress(address oldProtocolFeeCollector, address updatedProtocolFeeCollector);

    /// @dev Allows the owner to update the protocol fee multiplier.
    /// @param updatedProtocolFeeMultiplier The updated protocol fee multiplier.
    function setProtocolFeeMultiplier(uint256 updatedProtocolFeeMultiplier)
        external;

    /// @dev Allows the owner to update the protocolFeeCollector address.
    /// @param updatedProtocolFeeCollector The updated protocolFeeCollector contract address.
    function setProtocolFeeCollectorAddress(address updatedProtocolFeeCollector)
        external;

    /// @dev Returns the protocolFeeMultiplier
    function protocolFeeMultiplier()
        external
        view
        returns (uint256);

    /// @dev Returns the protocolFeeCollector address
    function protocolFeeCollector()
        external
        view
        returns (address);
}
/*
 
 Copyright 2019 ZeroEx Intl.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
 
 http://www.apache.org/licenses/LICENSE-2.0
 
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
 */
function setProtocolFeeCollectorAddress(address updatedProtocolFeeCollector)
    external;

/// @dev Allows the owner to update the protocolFeeCollector address.
/// @param updatedProtocolFeeCollector The updated protocolFeeCollector contract address.