Alternative of ATL for FMX application in RAD Studio 10.2

C++ Builder XE (VCL) supports ATL controls so that my C++ application (VCL) can be integrated (Embed) into third party application like Java application using this ATL implementation.

We use FMX in RAD Studio 10.2 now for developing C++ applications. But FMX does not support ATL controls.

My requirement is to integrate (Embed) C++ application (FMX) into Java application. How can i achieve this with RAD Studio?

Thanks in advance.