Average voltage for path satisfying between a min and max voltage.

        Args:
            min_voltage (float): The minimum allowable voltage for a given
                step.
            max_voltage (float): The maximum allowable voltage allowable for a
                given step.

        Returns:
            Average voltage in V across the insertion path (a subset of the
            path can be chosen by the optional arguments)

def get_average_voltage(self, min_voltage=None, max_voltage=None):
        """
        Average voltage for path satisfying between a min and max voltage.

        Args:
            min_voltage (float): The minimum allowable voltage for a given
                step.
            max_voltage (float): The maximum allowable voltage allowable for a
                given step.

        Returns:
            Average voltage in V across the insertion path (a subset of the
            path can be chosen by the optional arguments)
        """
        pairs_in_range = self._select_in_voltage_range(min_voltage,
                                                       max_voltage)
        if len(pairs_in_range) == 0:
            return 0
        total_cap_in_range = sum([p.mAh for p in pairs_in_range])
        total_edens_in_range = sum([p.mAh * p.voltage for p in pairs_in_range])
        return total_edens_in_range / total_cap_in_range