`export_workspace` not possible when running UDP with `datacube_from_process`

Context

I'm trying to run a UDP from a namespace, using datacube_from_process. I'd like to save my results to a workspace using export_workspace. My UDP already contains one or more save_result nodes, so I don't need/want to add it manually anymore.

Problem

datacube_from_process returns a DataCube object. However, export_workspace only works on a SaveResult object. The following code snippet can be used to replicate the error:

cube = connection.datacube_from_process(
    process_id='worldcereal_crop_type',
    namespace=namespace,
    spatial_extent=spatial_extent,
    temporal_extent=temporal_extent,
    model_url=model_url,
)

cube = cube.export_workspace(
    workspace="worldcereal-phase2-waw4-1-workspace",
    merge="worldcereal_global_croptype_benchmark_50km",
)

will result in

AttributeError: 'DataCube' object has no attribute 'export_workspace'

Discussion

Would it be possible to allow to call export_workspace directly on a DataCube object? Or, if there's a good reason not to: how can we allow to easily add an export_workspace node to a UDP?

Workaround

For now, I can continue, by adding the following line of code between datacube_from_process and export_workspace:

from openeo.rest.result import SaveResult
cube = SaveResult(cube._pg, connection)

Start by comparing the DataCube returned by datacube_from_process with openeo.rest.result.SaveResult and its export_workspace behavior. Determine whether DataCube should support the operation directly or whether a supported way to add the export_workspace node to a UDP is needed. Done means the reported AttributeError is resolved and the provided workflow can export the result without the private _pg workaround.