The MeasurementFormatter with .long unit style provides a .short string. See example below. This is needed for accessibility support.
let formatter = MeasurementFormatter()
formatter.unitStyle = .long
formatter.unitOptions = .providedUnit
let concentrationMass = Measurement(value: 2, unit: .gramsPerLiter)
print(formatter.string(from: concentrationMass))
// Results in "2 g/L". Expected "2 grams per liter".