import java.util.List;
import java.util.Map;
+import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.tracecompass.tmf.core.timestamp.ITmfTimestamp;
/**
*
* @return The map of <event_type, count>, for the whole trace
*/
- Map<String, Long> getEventTypesTotal();
+ Map<@NonNull String, @NonNull Long> getEventTypesTotal();
/**
* Retrieve the number of events in the trace in a given time interval.