I have a case where the input dom is not always known. So the schema will not have a node type defined for every possible element coming in from the dom. But I do not want to lose or modify the original unknown dom elements. I would like to just display these unknown dom elements as non-editable nodes in the editor. Is there a way to do this? Some kind of catch all for nodes not defined in the schema?
I would also need to be able to serialize these unknown elements back into the source format with no changes made to them.