* datastructures.
*/
JsonElement elt = packer.pack(FlatPackEntity.entity(description));
description = unpacker.<ApiDescription> unpack(ApiDescription.class, elt, null).getValue();
visitors.visit(new AcyclicVisitor() {
@Override
public <T> void endVisitValue(T value, Codex<T> codex, VisitorContext<T> ctx) {
boolean keep;
if (value instanceof Property) {
Property p = (Property) value;