ReadonlykindWhat the number measures, which decides the unit it's converted to.
Optional ReadonlyprecisionDecimal places the canonical rendering rounds to, overriding the default for the kind (volume 1, temperature 1, thickness 2).
Set only where a message needs a fixed precision. The return temperature of an unreachable target is quoted to the whole degree. A display formatter should keep its own precision for gallons or °F.
ReadonlyvalueCanonical: litres, °C, or L/kg.
One number quoted inside a DecoctionIssue, in the unit core stores.