addNullSourceConverter method
Adds a new GenericNullConverter to the list of registered converters.
This method is used to register additional converters for null source values.
Example:
final service = DefaultConversionService();
service.addNullSourceConverter(GenericNullConverter());
Implementation
@override
void addNullSourceConverter(GenericNullConverter converter) {
_nullConverters.add(converter);
}