Can't Install Data Processor as part of IoT Operations installation - unrecognised parameter

Question

As per the documentation, I've tried to include the '--include-dp' parameter when executing az iot ops init.
I get this:
unrecognized arguments: --include-dp

It doesn't seem to be listed as a parameter / argument here:

https://learn.microsoft.com/en-us/cli/azure/iot/ops?view=azure-cli-latest#az-iot-ops-init

Any help appreciated.