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InterfaceId.sol

// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.0;

contract InterfaceId {
    function getInterface(string[] memory signatures)  public pure returns (bytes4 interfaceId) {
        for (uint256 i = 0; i < signatures.length; i++) {
            interfaceId ^= bytes4(keccak256(bytes(signatures[i])));
        }
    }
}