// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {ISignatureTransfer} from "./ISignatureTransfer.sol"; import {IAllowanceTransfer} from "./IAllowanceTransfer.sol"; /// @notice Permit2 handles signature-based transfers in SignatureTransfer and allowance-based transfers in AllowanceTransfer. /// @dev Users must approve Permit2 before calling any of the transfer functions. interface IPermit2 is ISignatureTransfer, IAllowanceTransfer { // IPermit2 unifies the two interfaces so users have maximal flexibility with their approval. }