7ac0502c50
* Change import path from zos-lib to upgrades in all contracts * Update readme with new naming * Update package and deps names * Change path to initializable in AST of networks.jsons * Migrate manifest version * Use new oz file locations * Rename in ERC20Migrator comments * Update SDK install instructions in README * Update gitignore to use new session file name * trigger CI * Fixes to readme and package version * Use 2.5.0 release of OpenZeppelin SDK
13 lines
365 B
Solidity
13 lines
365 B
Solidity
pragma solidity ^0.5.2;
|
|
|
|
import "@openzeppelin/upgrades/contracts/Initializable.sol";
|
|
import "./IERC721Receiver.sol";
|
|
|
|
contract ERC721Holder is Initializable, IERC721Receiver {
|
|
function onERC721Received(address, address, uint256, bytes memory) public returns (bytes4) {
|
|
return this.onERC721Received.selector;
|
|
}
|
|
|
|
uint256[50] private ______gap;
|
|
}
|