- // SPDX-License-Identifier: MIT
- pragma solidity ^0.8.0;
- /**
- * @dev This is the interface that {BeaconProxy} expects of its beacon.
- */
- interface IBeacon {
- /**
- * @dev Must return an address that can be used as a delegate call target.
- *
- * {BeaconProxy} will check that this address is a contract.
- */
- function implementation() external view returns (address);
- }
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