docs: public void unsetMean() {
  		double oldMean = mean;
  		boolean oldMeanESet = meanESet;
  		mean = MEAN_EDEFAULT;
  		meanESet = false;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.UNSET, BpsimPackage.NORMAL_DISTRIBUTION_TYPE__MEAN, oldMean, MEAN_EDEFAULT, oldMeanESet));
  	}