How to submit a form?

public final class FeedDraftAddUseCase extends UseCase {

```
private final FeedDraft mFeedDraft;
private final FeedDraftRepository mFeedDraftRepository;

@Inject
public FeedDraftAddUseCase(FeedDraft feedDraft, FeedDraftRepository feedDraftRepository, ThreadExecutor threadExecutor,
PostExecutionThread postExecutionThread) {
super(threadExecutor, postExecutionThread);

this.mFeedDraft = feedDraft;
this.mFeedDraftRepository = feedDraftRepository;
}

@Override
protected Observable buildUseCaseObservable() {
return mFeedDraftRepository.insertFeedDraft(mFeedDraft);
}
```

}

this mFeedDraft how to ject