I use different names for config files (local.neon & local-example.neon) and I'm not willing to change that because of this extension and static properties are obviously out of the question as well.
Here is what I'd like to use:
# config.neon
extensions:
version: Clevis\Version\DI\VersionExtension
version:
localPath: %appDir%/config/local.neon
samplePath: %appDir%/config/local-example.neon
Another thing would be an ability to have more than one to check using this technique.