public void registerParts(InputStream is) throws IOException, ParseException {
BreezeFile file = BreezeParser.parseBreezeFile(is);
// TODO
for (BreezePart part : file.parts) breezeParts.put(part.getName(), part);
}
public Collection<BreezePart> getTopLevelParts() {
Set<BreezePart> parts = new HashSet<BreezePart>(breezeParts.values());
for (BreezePart part : breezeParts.values())
for (RawBreezePartReference ref : part.getParts()) parts.remove(get(ref.name()));
return parts;
}