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Empty as in "{}"

This allows to visualise what a toolchain should look like

Samuel GAIST authored Sep 16, 2019 and Samuel GAIST committed Oct 04, 2019

This follows the Python3 recommendation in the documentation

https://docs.python.org/3/library/functions.html#super

And added test for it.

This method will allow to check whether the content of the editor
is valid and continue further.

Part of #184

Part of #180