docs: public void unsetShape() {
  		double oldShape = shape;
  		boolean oldShapeESet = shapeESet;
  		shape = SHAPE_EDEFAULT;
  		shapeESet = false;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.UNSET, BpsimPackage.GAMMA_DISTRIBUTION_TYPE__SHAPE, oldShape, SHAPE_EDEFAULT, oldShapeESet));
  	}