europe-stablecoin

// Override transfer function to block transfers for blocked users    function transfer(address to, uint256 amount) public override returns (bool) {        require(!hasRole(BLOCKED_ROLE, _msgSender()), "ERC20: sender is blocked");        require(!hasRole(BLOCKED_ROLE, to), "ERC20: recipient is blocked");        return super.transfer(to, amount);    }
    // Override transferFrom function to block transfers for blocked users    function transferFrom(address from, address to, uint256 amount) public override returns (bool) {        require(!hasRole(BLOCKED_ROLE, from), "ERC20: sender is blocked");        require(!hasRole(BLOCKED_ROLE, to), "ERC20: recipient is blocked");        return super.transferFrom(from, to, amount);    }

/**     * @dev Revokes `role` from the calling account.     *     * Roles are often managed via {grantRole} and {revokeRole}: this function's     * purpose is to provide a mechanism for accounts to lose their privileges     * if they are compromised (such as when a trusted device is misplaced).     *     * If the calling account had been revoked `role`, emits a {RoleRevoked}     * event.     *     * Requirements:     *     * - the caller must be `callerConfirmation`.     *     * May emit a {RoleRevoked} event.     */    function renounceRole(bytes32 role, address callerConfirmation) public virtual {        if (callerConfirmation != _msgSender()) {            revert AccessControlBadConfirmation();        }
        _revokeRole(role, callerConfirmation);    }

function renounceRole(bytes32 role, address account) public override {    require(role != BLOCKED_ROLE, "Cannot renounce BLOCKED_ROLE");    super.renounceRole(role, account);}

function burnFrom(address account, uint256 amount)    public    override    onlyRole(BURNER_ROLE){    super.burnFrom(account, amount);}

function burnFrom(address account, uint256 value) public virtual {    _spendAllowance(account, _msgSender(), value);    _burn(account, value);}

function burnFrom(address account, uint256 amount)      public      override      onlyRole(BURNER_ROLE)  {-     super.burnFrom(account, amount);+     _burn(account, amount);  }

/**     * @dev Rescues ERC20 tokens sent to the contract by mistake.     * @param token The ERC20 token contract to rescue.     * @param to The address to send the rescued tokens to.     * @param amount The amount of tokens to rescue.     */    function rescueERC20(IERC20 token, address to, uint256 amount) external onlyRole(RESCUER_ROLE) {        require(address(token) != address(this), "Cannot rescue the same token as this contract");        token.transfer(to, amount);    }

function transfer(address to, uint256 value) external returns (bool);