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kotlinlang

Hello! Quick question for Kotlin users with Spring.. When you are using constructor injection with spring do you keep the constructor classes as nullable or not nullable?

for example;

```@Service
class FirestoreService(
  private val firestore: Firestore?,
)```
vs.
```@Service
class FirestoreService(
  private val firestore: Firestore,
)```


Nullable type:
If you make an injected bean type nullable, then the injection will be considered as non-required, which is equal to:
```@Service
class FirestoreService(
  @Autowired(required = false)
  private val firestore: Firestore?,
)```
Not nullable type:
Injection is required, Spring will throw an error if it cant satisfy a property

Yeah, also note that Spring checks the property for the `@Nullable`  annotation too