docs: public static void initComponentInstanceFields(IsVueComponent vueComponentInstance,
        IsVueComponent javaComponentClassInstance) {
      JsPropertyMap<Object> vueComponentInstancePropertyMap = Js.cast(vueComponentInstance);
      JsPropertyMap<Object> javaComponentClassInstancePropertyMap = Js
          .cast(javaComponentClassInstance);
  
      javaComponentClassInstancePropertyMap.forEach(key -> {
        try {
          if (!javaComponentClassInstancePropertyMap.has(key)
              || vueComponentInstancePropertyMap.get(key) != null) {
            return;
          }
          vueComponentInstancePropertyMap.set(key, javaComponentClassInstancePropertyMap.get(key));
        } catch (Exception e) {
  
        }
      });
    }