What is equivalent to `InteractiveShell.kernel.comm_manager.register_target('file_request', target_func)`?

[rraadd88]

Hi,
I encountered this error while using an interactive tool through CaptureShell:

---> 61 get_ipython().kernel.comm_manager.register_target('file_request', target_func)
AttributeError: 'CaptureShell' object has no attribute 'kernel'

Is there any equivalent to InteractiveShell's InteractiveShell.kernel.comm_manager.register_target('file_request', target_func) or colab notebook's google.colab.output.register_callback('ReadFile', callback) attributes that I could use to resolve the error?
Thanks.