node.js equivalent when com api returns com object

[binglew]

Hello,
Thanks for the great module. but I' m using a com object which will return another com object's address through it's output parameter. so how can I write the equivalent code in node.js?

//C++ sample code:
sub_com_obj_type *pSubComObj;
pComObj->getSubObj(&pSubComObj);
pSubComObj->doSomeThing();

Thanks,
Bingle