Error when running 'DynUNet' tutorial: object has no attribute 'get_feature_maps'

[DrAlaafeef]

Describe the bug
A clear and concise description of what the bug is.

I tried to run this tutorial, and I got this error message:
"torch.nn.modules.module.ModuleAttributeError: 'DynUNet' object has no attribute 'get_feature_maps'"
This error showed when runing the docker images "projectmonai/monai:0.4.0" and 2projectmonai/monai:latest".

It seems to me that the DynUNet public interface "get_feature_maps method" was deleted and updated with a concatenated tensor. However, the tutorial still not updated.

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[rijobro]

Thanks for raising this!

[wyli]

the multiscale features have been updated to be stacked:
https://github.com/Project-MONAI/MONAI/blob/06e1e990b03a763ac0a1da0e37917f991e3901cf/monai/networks/nets/dynunet.py#L207-L211