static float toMmHg(final float value, @BloodPressureUnit final int unit) {
		if (unit == UNIT_mmHg) {
			return value;
		} else {
			return value / 0.133322387415f;
		}
	}
Converts the value provided in given unit to mmHg.
If the unit is already {@link #UNIT_mmHg} it will be returned as is.

@param value the pressure value in given unit.
@param unit the unit of the value ({@link #UNIT_mmHg} or {@link #UNIT_kPa}).
@return Value in mmHg.
ble-common/src/main/java/no/nordicsemi/android/ble/common/profile/bp/BloodPressureTypes.java