Raise an error when a variable is not found in the reference sample #425

Job	Run time
Code style	33s
Documentation style	15s
Build documentation	1m 39s
Build and Smoke tests (ubuntu-latest, 3.9)	32s
Build and Smoke tests (ubuntu-latest, 3.10)	19s
Build and Smoke tests (ubuntu-latest, 3.11)	18s
Build and Smoke tests (ubuntu-latest, 3.12)	21s
Build and Smoke tests (windows-latest, 3.9)	1m 56s
Build and Smoke tests (windows-latest, 3.10)	1m 11s
Build and Smoke tests (windows-latest, 3.11)	1m 34s
Build and Smoke tests (windows-latest, 3.12)	1m 38s
Test using Python 3.9	1m 4s
Test using Python 3.10	56s
Test using Python 3.11	57s
Test using Python 3.12	57s
Test using Python 3.9	2m 11s
Test using Python 3.10	1m 45s
Test using Python 3.11	2m 8s
Test using Python 3.12	2m 9s
Build library basic example	13s
Release to private and public PyPI and to GitHub	0s
Deploy stable documentation	0s
Deploy development documentation	0s
	22m 36s

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