contract CanTransferRole is Context {
    using Roles for Roles.Role;

    event CanTransferAdded(address indexed account);
    event CanTransferRemoved(address indexed account);

    Roles.Role private _canTransfer;

    constructor () internal {
        _addCanTransfer(_msgSender());
    }

    modifier onlyCanTransfer() {
        require(canTransfer(_msgSender()), "CanTransferRole: caller does not have the CanTransfer role");
        _;
    }

    function canTransfer(address account) public view returns (bool) {
        return _canTransfer.has(account);
    }

    function addCanTransfer(address account) public onlyCanTransfer {
        _addCanTransfer(account);
    }
    
    function removeCanTransfer(address account) public onlyCanTransfer {
        _removeCanTransfer(account);
    }

    // Using this function might breaks CORE functionally - be careful
    function renounceCanTransfer() public {
        _removeCanTransfer(_msgSender());
    }

    function _addCanTransfer(address account) internal {
        _canTransfer.add(account);
        emit CanTransferAdded(account);
    }

    function _removeCanTransfer(address account) internal {
        _canTransfer.remove(account);
        emit CanTransferRemoved(account);
    }
}
function renounceCanTransfer() public {
    _removeCanTransfer(_msgSender());
}

// Using this function might breaks CORE functionally - be careful