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Update comment for _beforeTokenTransfer (#3586)

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hamiltoncyber
2022-08-24 23:07:35 +08:00
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contracts/token/ERC721/extensions/ERC721Enumerable.sol
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@ -64,8 +64,7 @@ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
* transferred to `to`. * transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`. * - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned. * - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address. * - `from` and 'to' cannot be the zero address at the same time.
* - `to` cannot be the zero address.
* *
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/ */