Bart Jongejan reports this form a pull request:
Note that I had to delete the "output" field.
This field is optional, and currently not used according to https://github.com/clarin-eric/switchboard-doc/blob/master/documentation/ToolDescriptionSpec_v2.md.
However, with the "output" field present, validation failed using the command `python validate-all-tools.py -s spec-v2.schema.json -t ../tools/'
Bart Jongejan reports this form a pull request: