Zigbee RF4CE remote controller development

Hello, I am going to use nRF52833 to develop a remote controller based on Zigbee RF4CE specification.

From the  nRF5 SDK for Thread and Zigbee, it looks like RF4CE should be supported.

However, I cannot find any relevant information or notes for RF4CE remote controller development.

Is there any resources for such development or RF4CE remote control sample codes for nRF52833?

Thanks a lot.

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