LidoAdapterStorage

struct LidoAdapterStorage {
    /// @dev WETH — the adapter's asset and idle buffer (the synchronous withdraw is served from it).
    address _weth;
    /// @dev Lido stETH token (`submit` mints it; an intermediate hop, always wrapped immediately).
    address _lido;
    /// @dev wstETH wrapper the staked position is held as (non-rebasing; yield via its rising rate).
    address _wstETH;
    /// @dev Lido withdrawal queue the slow async-exit leg routes through.
    address _withdrawalQueue;
    /// @dev The Lattice vault funds are returned to on withdraw/emergency.
    address _vault;
    /// @dev Reward recipient for stray-token sweeps (Lido has no claimable reward token).
    address _rewardRecipient;
    /// @dev Total stETH currently locked across all pending (unclaimed) withdrawal requests. Counted
    ///      in NAV so funds in-flight through the queue are not lost from accounting.
    uint256 _pendingAssets;
    /// @dev Set of pending Lido withdrawal-request ids (added on request, removed on claim).
    EnumerableSet.UintSet _pendingRequests;
    /// @dev Per-request stETH amount, used to decrement `_pendingAssets` on claim.
    mapping(uint256 => uint256) _requestAssets;
    /// @dev Authorized operator: the SOLE caller permitted to invoke `deploy`/`withdraw`/`harvest`
    ///      (the StrategyManager in the live system). Zero until wired ⇒ that trio reverts.
    ///      APPENDED last (append-only ERC-7201 rule — never reorder/insert).
    address _operator;
}