I'm sorry rusia,
I have not tried using CE with Animate CC so far so I don't know what could be wrong here. I'm pretty sure we had this namespace before 3.2 but perhaps it's not a problem when everything is in a .swc file.
We're not planning for a build (even pre 3.2) soon and not able to try and use CE with Animate so the quick and easy solution I can find for you now is if you have a nice find/replace tool you could replace all instance of its use with "public"
That namespace is really there only to prevent access to some function / prevent confusion or cross package access that are not supposed to be called but I don't know what else I can suggest for now.
edit: but obviously if you or anyone else has some info on that I'll be glad to know since I'm not working with Animate CC (well only to set up assets)