docs: boolean reportSubtaskStats(JobVertexID jobVertexId, SubtaskStateStats subtask) {
  		TaskStateStats taskStateStats = taskStats.get(jobVertexId);
  
  		if (taskStateStats != null && taskStateStats.reportSubtaskStats(subtask)) {
  			currentNumAcknowledgedSubtasks++;
  			latestAcknowledgedSubtask = subtask;
  
  			currentStateSize += subtask.getStateSize();
  
  			long alignmentBuffered = subtask.getAlignmentBuffered();
  			if (alignmentBuffered > 0) {
  				currentAlignmentBuffered += alignmentBuffered;
  			}
  
  			return true;
  		} else {
  			return false;
  		}
  	}