[ERC7410] spenderが自らのトークンallowance量を変更する仕組みを理解しよう！ - Qiita

pragma solidity ^0.8.0; /** * @title IERC-7410 Update Allowance By Spender Extension * Note: the ERC-165 identifier for this interface is 0x12860fba */ interface IERC7410 is IERC20 { /** * @notice Decreases any allowance by `owner` address for caller. * Emits an {IERC20-Approval} event. * * Requirements: * - when `subtractedValue` is equal or higher than current allowance of spender the new allowa