docs: @Override
  	public void eUnset(int featureID) {
  		switch (featureID) {
  			case BpsimPackage.COST_PARAMETERS__FIXED_COST:
  				setFixedCost((Parameter)null);
  				return;
  			case BpsimPackage.COST_PARAMETERS__UNIT_COST:
  				setUnitCost((Parameter)null);
  				return;
  		}
  		super.eUnset(featureID);
  	}