No, this has not been added, as the robustness mechanisms introduced with the "RobustNetworkedDataProvider" act entirely on the adapter side.

I acknowledge that it could be a useful extension; for instance, the RobustNetworkedDataProvider could maintain a special item to carry this information.
Something similar is done in the provided sample JMS Data Adapter (in DOCS-SDKs\sdk_adapter_java\examples\StockListDemo_JMS_D ataAdapter), where a dedicated field is added for each item.

For now, you might add a custom keepalive mechanism, through a dedicated item with regular updates.