As a user of KREST nodes, I have been very disappointed by the fact that there is no support for this very important functionality because it comes from Community Nodes. Since the company behind KREST has been closed, there is nothing to expect in the future (see this post).
Please take KREST under the wing of KNIME core functionality to revive it and make work as expected.
Hoping to hear good news,
Desperate KREST community