<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def getValue(self, unit=None):
 """ Return the value of the feature. If the unit is specified and the feature has a unit, the value is converted Args: - unit(str,optional):
 A unit to convert the current feature value ('B','K','M','G') """


        if unit or self.unit:
            r = float(self.value * UnitToValue(self.unit)) / UnitToValue(unit)
            return int(round(r)) if isinstance(self.value, int) else r
        return self.value