Ellen van de Geer - de Jong

Error when deleting multiple rows with a one to many and cascading delete enabled

2

### How to Reproduce 1. Start a Molgenis instance. 2. Upload test data [it_emx_onetomany (2).xlsx](https://github.com/molgenis/molgenis/files/5340944/it_emx_onetomany.2.xlsx) (found it in https://github.com/molgenis/molgenis/issues/8447) 4. Using the metadata manager plugin to enable cascade delete for...

Support custom function 'type' in 'add_argument()'

5

Hi, Is it possible to provide a custom function to `type` argument in `add_argument`? For example, something similar to: ``` non_empty_existing_file