How to find preview env agent id in preprocessor interface

Hi guys,

We are using preprecosser interface to handle one event. It is using below method.

public void preprocess(final ReplicationAction replicationAction, final ReplicationOptions replicationOptions) 

May i know how to get agentid for above method ? Below code i tried but it was throwing null for agent id. Same code works with event handler interface.

Event event = replicationAction.toEvent();

        final List<String> agentIdList = (List) event.getProperty("agentIds");

        LOG.info("preprocess agentIdList {}", agentIdList);

        final boolean isPreview = CollectionUtils.isNotEmpty(agentIdList) &&

                                    agentIdList.stream().anyMatch(id -> id.contains("preview"));

        if (isPreview)

{

            return;

        }

I want to figure out if the request is for Preview environment or for Publish env using agent ids. Please let me know if any one has inputs for this.