How to use dynamic resource allocation,I can not find resourceClass and relevant crd

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Cluster information:

how to use dynamic resource allocation,I can not find resourceClass and relevant crd.
I have installed nvidia gpu-operator,and enabled the feature gate.

Kubernetes version: 1.29.0
Cloud being used: (put bare-metal if not on a public cloud)
Installation method:
Host OS:
CNI and version:
CRI and version:

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