MapperException.missingSubclass constructor
MapperException.missingSubclass()
Exception when a discriminator for an abstract class has no match.
Implementation
factory MapperException.missingSubclass(
String className, String discriminatorKey, String discriminatorValue) {
return MapperException._('Cannot instantiate class $className, did you '
'forgot to specify a subclass for [ $discriminatorKey: '
"'$discriminatorValue' ] or a default subclass?");
}