public void invoke(MethodInvocation method) throws Throwable {
      if (method.isGetter()) {
        if (properties.containsKey(method.getName())) {
          method.setResult(properties.get(method.getName()));
          return;
        }
        if (unknown.contains(method.getName())) {
          return;
        }

        Object value;
        next.invoke(method);
        if (!method.found()) {
          unknown.add(method.getName());
          return;
        }
        value = method.getResult();
        properties.put(method.getName(), value);
        return;
      }

      next.invoke(method);
    }