Github user peculater commented on the issue:
https://github.com/apache/incubator-tamaya-extensions/pull/12
For that use I'd go with
```
@Inject
@Config
private Optional<String> myConfigVal;
```
The default config name is the name of the variable, and
"required=(true|false)" doesn't change the result if you're using Optional<T>.
I'm super interested in how well this works for you. :-)---
