unitsofmeasurement/unit-api

Hello, I'm trying to use this api to manage material quantities. I'm trying to parse string units from a DB to a Unit. Can someone advise? I tried this approach, but it seems the ServiceProvider needs to be configured with services. Is there an easier approach to identifying a unit? In this case, I'm assuming it's mass but it could also be a volume.

    private void parseMeasurement() {
        if (available > 0 && availableUnit != null) {
            try {
                UnitFormat format = ServiceProvider.current().getFormatService().getUnitFormat();
                Unit<?> unit = format.parse(availableUnit);
                if (unit.getSystemUnit() instanceof Mass) {
                    Quantity<?> mass = Quantities.getQuantity(available,unit);
                    massAvailProperty().set(mass);
                } else {
                    log.debug("Unexpected unit {} is not a Mass", unit.getName());
                }
            } catch (MeasurementParseException e) {
                log.debug("Can't parse unit",e);
            }
        }
    }

Thanks