How to get the "CaptureAudioData" in AudioCaptureComponent?

I wanna get access to the “CaptureAudioData” in AudioCaptureComponent, but “CaptureAudioData” is a private member and no public method could get the data. Any suggestions? Thanks.

My method has been to have the AudioCapture Component output to a Submix where I enable recording.

Could you kindly show me some code? It troubles me for a long time …