contract BoringOwnable is BoringOwnableData {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    /// @notice `owner` defaults to msg.sender on construction.
    constructor() public {
        owner = msg.sender;
        emit OwnershipTransferred(address(0), msg.sender);
    }

    /// @notice Transfers ownership to `newOwner`. Either directly or claimable by the new pending owner.
    /// Can only be invoked by the current `owner`.
    /// @param newOwner Address of the new owner.
    /// @param direct True if `newOwner` should be set immediately. False if `newOwner` needs to use `claimOwnership`.
    /// @param renounce Allows the `newOwner` to be `address(0)` if `direct` and `renounce` is True. Has no effect otherwise.
    function transferOwnership(
        address newOwner,
        bool direct,
        bool renounce
    ) public onlyOwner {
        if (direct) {
            // Checks
            require(
                newOwner != address(0) || renounce,
                "Ownable: zero address"
            );

            // Effects
            emit OwnershipTransferred(owner, newOwner);
            owner = newOwner;
            pendingOwner = address(0);
        } else {
            // Effects
            pendingOwner = newOwner;
        }
    }

    /// @notice Needs to be called by `pendingOwner` to claim ownership.
    function claimOwnership() public {
        address _pendingOwner = pendingOwner;

        // Checks
        require(
            msg.sender == _pendingOwner,
            "Ownable: caller != pending owner"
        );

        // Effects
        emit OwnershipTransferred(owner, _pendingOwner);
        owner = _pendingOwner;
        pendingOwner = address(0);
    }

    /// @notice Only allows the `owner` to execute the function.
    modifier onlyOwner() {
        require(msg.sender == owner, "Ownable: caller is not the owner");
        _;
    }
}
function claimOwnership() public {
    address _pendingOwner = pendingOwner;

    // Checks
    require(
        msg.sender == _pendingOwner,
        "Ownable: caller != pending owner"
    );

    // Effects
    emit OwnershipTransferred(owner, _pendingOwner);
    owner = _pendingOwner;
    pendingOwner = address(0);
}

/// @notice Needs to be called by `pendingOwner` to claim ownership.