Construct a quantity using the configured parser unless an override is supplied.
Optionalunits: stringOptionalparser: Parser<QuantityDefinition>ReadonlyconfigFrozen snapshot of the class's effective Decimal settings.
ReadonlyconversionImmutable limits applied separately to each instance's conversion caches.
ReadonlyparserImmutable parser settings shared by this class and its default parser instances.
Create a class with numerical and parser settings while retaining this parser factory.
Constructor returned by createQuantityClass, with an optional per-instance parser override.