import org.springframework.http.ResponseEntity;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;
import org.springframework.http.ResponseEntity;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;
String sanitizedUsername = UserController.sanitize(username);
User user = new User(sanitizedUsername, LocalDateTime.now(), false);
repository.save(user);
String sanitizedUsername = UserController.sanitize(username);
User user = new User(sanitizedUsername, LocalDateTime.now(), false);
repository.save(user);