abstract contract Ownable is Context {
    address public _owner;
    address private _authorizedNewOwner;

    event OwnershipTransferAuthorization(address indexed authorizedAddress);
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Returns the address of the current authorized new owner.
     */
    function authorizedNewOwner() public view virtual returns (address) {
        return _authorizedNewOwner;
    }

    /**
     * @notice Authorizes the transfer of ownership from _owner to the provided address.
     * NOTE: No transfer will occur unless authorizedAddress calls assumeOwnership( ).
     * This authorization may be removed by another call to this function authorizing
     * the null address.
     *
     * @param authorizedAddress The address authorized to become the new owner.
     */
    function authorizeOwnershipTransfer(address authorizedAddress) external onlyOwner {
        _authorizedNewOwner = authorizedAddress;
        emit OwnershipTransferAuthorization(_authorizedNewOwner);
    }

    /**
     * @notice Transfers ownership of this contract to the _authorizedNewOwner.
     */
    function assumeOwnership() external {
        require(_msgSender() == _authorizedNewOwner, "Ownable: only the authorized new owner can accept ownership");
        emit OwnershipTransferred(_owner, _authorizedNewOwner);
        _owner = _authorizedNewOwner;
        _authorizedNewOwner = address(0);
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     *
     * @param confirmAddress The address wants to give up ownership.
     */
    function renounceOwnership(address confirmAddress) public virtual onlyOwner {
        require(confirmAddress == _owner, "Ownable: confirm address is wrong");
        emit OwnershipTransferred(_owner, address(0));
        _authorizedNewOwner = address(0);
        _owner = address(0);
    }
    
}
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
function authorizeOwnershipTransfer(address authorizedAddress) external onlyOwner {
    _authorizedNewOwner = authorizedAddress;
    emit OwnershipTransferAuthorization(_authorizedNewOwner);
}

/**
 * @notice Authorizes the transfer of ownership from _owner to the provided address.
 * NOTE: No transfer will occur unless authorizedAddress calls assumeOwnership( ).
 * This authorization may be removed by another call to this function authorizing
 * the null address.
 *
 * @param authorizedAddress The address authorized to become the new owner.
 */