// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/extensions/ERC721Pausable.sol) pragma solidity ^0.8.20; import {ERC721} from "../ERC721.sol"; import {Pausable} from "../../../utils/Pausable.sol"; /** * @dev ERC721 token with pausable token transfers, minting and burning. * * Useful for scenarios such as preventing trades until the end of an evaluation * period, or having an emergency switch for freezing all token transfers in the * event of a large bug. * * IMPORTANT: This contract does not include public pause and unpause functions. In * addition to inheriting this contract, you must define both functions, invoking the * {Pausable-_pause} and {Pausable-_unpause} internal functions, with appropriate * access control, e.g. using {AccessControl} or {Ownable}. Not doing so will * make the contract pause mechanism of the contract unreachable, and thus unusable. */ abstract contract ERC721Pausable is ERC721, Pausable { /** * @dev See {ERC721-_update}. * * Requirements: * * - the contract must not be paused. */ function _update( address to, uint256 tokenId, address auth ) internal virtual override whenNotPaused returns (address) { return super._update(to, tokenId, auth); } }