docs: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case BpsimPackage.ENUM_PARAMETER_TYPE__GROUP:
  				return group != null && !group.isEmpty();
  			case BpsimPackage.ENUM_PARAMETER_TYPE__PARAMETER_VALUE_GROUP:
  				return !getParameterValueGroup().isEmpty();
  			case BpsimPackage.ENUM_PARAMETER_TYPE__PARAMETER_VALUE:
  				return !getParameterValue().isEmpty();
  		}
  		return super.eIsSet(featureID);
  	}