@Override
    protected CachedValue<XmlAttlistDecl[]> compute(final XmlElement owner, Object o) {
      return CachedValuesManager.getManager(owner.getProject()).createCachedValue(() -> {
        XmlAttlistDecl[] decls = doCollectAttlistDeclarations(owner);
        return new CachedValueProvider.Result<>(decls, (Object[])ArrayUtil.append(decls, owner, XmlElement.class));
      });
    }
@Override
    protected CachedValue<XmlAttlistDecl[]> compute(final XmlElement owner, Object o)