public synchronized TaskManagerMetricStore getTaskManagerMetricStore(String tmID) {
		return tmID == null ? null : TaskManagerMetricStore.unmodifiable(taskManagers.get(tmID));
	}
public synchronized TaskManagerMetricStore getTaskManagerMetricStore ( String tmID ) { return tmID == null ? null : TaskManagerMetricStore . unmodifiable ( taskManagers . get ( tmID ) ) ; }
Returns the {@link TaskManagerMetricStore} for the given taskmanager ID.

@param tmID taskmanager ID
@return TaskManagerMetricStore for the given ID, or null if no store for the given argument exists