code: @Override
  	public boolean eIsSet(int featureID)
  	{
  		switch (featureID)
  		{
  			case XbasePackage.XCASE_PART__CASE:
  				return case_ != null;
  			case XbasePackage.XCASE_PART__THEN:
  				return then != null;
  			case XbasePackage.XCASE_PART__TYPE_GUARD:
  				return typeGuard != null;
  			case XbasePackage.XCASE_PART__FALL_THROUGH:
  				return fallThrough != FALL_THROUGH_EDEFAULT;
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated