How to Read a DataFrameDirectory in a custom component

I'm trying to combine existing designer components (e.g: Remove Duplicate Rows) with a custom component. The output of the Remove Duplicate Rows (RDR) component goes to the custom component. The designer tells me the type of the RDR output is a DataFrameDirectory:


In my custom component i can see these files are passed:


I tried several things like: Dataset.Tabular.from_parquet(path) but this does not work.

My request:
Since all existing designer data transformation components ouput a DataFrameDirectory. I think it will be great if there is a example how to use this output type as input in a custom component.

No file or test is named. Start by reviewing the existing designer data-transformation and custom-component examples, then trace the DataFrameDirectory output from Remove Duplicate Rows into a custom component. Done means adding an example that shows how to consume this output type as custom-component input.

Written by the indexing model from the issue text.