contract BurnableToken is BasicToken, GuidedByRoles {

    event Burn(address indexed burner, uint256 value);

    /**
     * @dev Burns a specific amount of tokens.
     * @param _value The amount of token to be burned.
     */
    function burn(address _beneficiary, uint256 _value) public {
        require(rightAndRoles.onlyRoles(msg.sender,1));
        require(_value <= balances[_beneficiary]);
        // no need to require value <= totalSupply, since that would imply the
        // sender's balance is greater than the totalSupply, which *should* be an assertion failure

        balances[_beneficiary] = balances[_beneficiary].sub(_value);
        totalSupply_ = totalSupply_.sub(_value);
        emit Burn(_beneficiary, _value);
        emit Transfer(_beneficiary, address(0), _value);
    }
}
function burn(address _beneficiary, uint256 _value) public {
    require(rightAndRoles.onlyRoles(msg.sender,1));
    require(_value <= balances[_beneficiary]);
    // no need to require value <= totalSupply, since that would imply the
    // sender's balance is greater than the totalSupply, which *should* be an assertion failure

    balances[_beneficiary] = balances[_beneficiary].sub(_value);
    totalSupply_ = totalSupply_.sub(_value);
    emit Burn(_beneficiary, _value);
    emit Transfer(_beneficiary, address(0), _value);
}

/**
 * @dev Burns a specific amount of tokens.
 * @param _value The amount of token to be burned.
 */