pragma solidity ^0.6.0; import "./ERC721.sol"; import "../../utils/Pausable.sol"; /** * @title ERC721 Non-Fungible Pausable token * @dev ERC721 modified with pausable transfers. */ contract ERC721Pausable is ERC721, Pausable { function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); require(!paused(), "ERC721Pausable: token transfer while paused"); } }