(self)
return self._bitRange
None or inclusive bits used pair,
           e.g. (2,4) => 3 bits used 2nd, 3rd and 4th
None or inclusive bits used pair,
           e.g. (2,4) => 3 bits used 2nd, 3rd and 4th
None or inclusive bits used pair e . g . ( 2 4 ) = > 3 bits used 2nd 3rd and 4th
def getBitRange(self):
        """None or inclusive bits used pair,
           e.g. (2,4) => 3 bits used 2nd, 3rd and 4th
        """
        return self._bitRange
def getBitRange ( self ) : return self . _bitRange