If you try to execute "_composer dump-autoload --optimize_", you will get the following warn
Generating optimized autoload files
Warning: Ambiguous class resolution, "StashSessionSessionHandlerInterface" was found in both
the first will be used.
Please add a note in Using composer documentation page explaining:
- If such warnings can be ignored
- If it's advisable or not to use "_composer dump-autoload --optimize_" and why
Warning is caused by https://github.com/tedious/Stash/issues/181