private Optional<Application> getOptionalApplication(ApplicationId applicationId) {
        try {
            return Optional.of(getApplication(applicationId));
        } catch (Exception e) {
            return Optional.empty();
        }
    }
Deletes an application and associated resources

@return true if the application was found and deleted, false if it was not present
@throws RuntimeException if deleting the application fails. This method is exception safe.
configserver/src/main/java/com/yahoo/vespa/config/server/ApplicationRepository.java