String getHeaderMessage(StackTracesPerMember stackTracesPerMember) {
    String headerMessage = stackTracesPerMember.getMemberNameOrId();

    Instant timestamp = stackTracesPerMember.getTimestamp();
    if (timestamp != null) {
      headerMessage += " at " + formatter.format(timestamp);
    }
    return headerMessage;
  }
Current implementation supports writing it to a locator/server side file and returning the
location of the file
geode-gfsh/src/main/java/org/apache/geode/management/internal/cli/commands/ExportStackTraceCommand.java