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on a related note, where can I found the list of values of an option, e.g:
```
 --test-junit-default-concurrency=&lt;str&gt; (default: 'SERIAL')
Set the default concurrency mode for running tests not annotated with @TestParallel or @TestSerial. 
```

for this precise exemple in the junit_tests target doc \o/
```
java_tests: &lt;Add description&gt;
concurrency = ..., 	One of 'SERIAL', 'PARALLEL_CLASSES', 'PARALLEL_METHODS', or 'PARALLEL_CLASSES_AND_METHODS'. Overrides the setting of --test-junit-default-concurrency. (default: None)
```