How to change keypoint in a model?

how to change the keypoints in a model.
I wanted to use something like centernet_resnet50_v2_512x512_kpts_coco17_tpu-8
Which does OBJ detection and keypoints.
I have learned how to change the classes, I know how to add the keypoints on the label maps and the pictures themselves.
But how to I add it to the premade TS model above.
I don’t want to reinvent the wheel here just be able to alter for my own needs.
That model does the face and body, I want to do birds.
is there anyone who knows how to change the key points?

There was already a thread at:

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