public class CollectionToReportConverter implements GenericConverter {
    @Override
    public Set<ConvertiblePair> getConvertibleTypes() {
        return Collections.singleton(new ConvertiblePair(Collection.class, Report.class));
    }
 
    @Override
    public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
        Collection<?> list = (Collection<?>) source;
        // Sophisticated logic using TypeDescriptor to inspect generic parameters
        return new Report(list.size(), sourceType.getElementTypeDescriptor().getType());
    }
}