A way to add startup command line argument when loading java

In our jar we have to call it with this argument: 
```
--add-exports java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED
```
like so: 
```
java --add-exports java.base/sun.reflect.generics.reflectiveObjects=ALL-UNNAMED
```
Is there a way to add this argument to the java node? 