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// SPDX-FileCopyrightText: 2021 Lido <info@lido.fi>
// SPDX-License-Identifier: GPL-3.0
/* See contracts/COMPILERS.md */
pragma solidity 0.8.9;
import "@openzeppelin/contracts-v4.4/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts-v4.4/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts-v4.4/token/ERC20/utils/SafeERC20.sol";
interface ILido {
    /**
      * @notice A payable function supposed to be called only by LidoExecLayerRewardsVault contract
      * @dev We need a dedicated function because funds received by the default payable function
      * are treated as a user deposit
      */
    function receiveELRewards() external payable;
}
/**
 * @title A vault for temporary storage of execution layer rewards (MEV and tx priority fee)
 */
contract LidoExecutionLayerRewardsVault {
    using SafeERC20 for IERC20;
    address public immutable LIDO;
    address public immutable TREASURY;
    /**
      * Emitted when the ERC20 `token` recovered (i.e. transferred)
      * to the Lido treasury address by `requestedBy` sender.
      */
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