contract OwnableV06 is
    IOwnableV06
{
    /// @dev The owner of this contract.
    /// @return 0 The owner address.
    address public override owner;

    constructor() public {
        owner = msg.sender;
    }

    modifier onlyOwner() {
        _assertSenderIsOwner();
        _;
    }

    /// @dev Change the owner of this contract.
    /// @param newOwner New owner address.
    function transferOwnership(address newOwner)
        public
        override
        onlyOwner
    {
        if (newOwner == address(0)) {
            LibRichErrorsV06.rrevert(LibOwnableRichErrorsV06.TransferOwnerToZeroError());
        } else {
            owner = newOwner;
            emit OwnershipTransferred(msg.sender, newOwner);
        }
    }

    function _assertSenderIsOwner()
        internal
        view
    {
        if (msg.sender != owner) {
            LibRichErrorsV06.rrevert(LibOwnableRichErrorsV06.OnlyOwnerError(
                msg.sender,
                owner
            ));
        }
    }
}
function transferOwnership(address newOwner)
        public
        override
        onlyOwner
    {
        if (newOwner == address(0)) {
            LibRichErrorsV06.rrevert(LibOwnableRichErrorsV06.TransferOwnerToZeroError());
        } else {
            owner = newOwner;
            emit OwnershipTransferred(msg.sender, newOwner);
        }
    }
/// @dev Change the owner of this contract.
/// @param newOwner New owner address.