RTOS example with X-CUBE-BLE2 BlueNRG M2

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I using BlueNRG M2 as a network co-processor and have configured my project with STM32 CUBEMX which uses X-CUBE-BLE2. It is a non RTOS based project and is working well.

Now, I want to use RTOS (FreeRTOS) with the BLE stack. Is there any example which I can refer to or any docs on how to use it?