private final static ConcurrentHashMap<String, SnippetDeclarationInfo> infoCache = new ConcurrentHashMap<>();
@Override
public SnippetDeclarationInfo extract(String renderDeclaration) {
SnippetDeclarationInfo info = infoCache.get(renderDeclaration);
if (info == null) {
info = _extract(renderDeclaration);
infoCache.put(renderDeclaration, info);
}
return info;