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Solidity API


_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._


function _beforeTokenTransfer(bytes32 from, bytes32 to, uint256 tokenId) internal virtual

_See {ERC721-_beforeTokenTransfer}.


  • the contract must not be paused._