code: @Override
  	public void eUnset(int featureID)
  	{
  		switch (featureID)
  		{
  			case XbasePackage.XCASE_PART__CASE:
  				setCase((XExpression)null);
  				return;
  			case XbasePackage.XCASE_PART__THEN:
  				setThen((XExpression)null);
  				return;
  			case XbasePackage.XCASE_PART__TYPE_GUARD:
  				setTypeGuard((JvmTypeReference)null);
  				return;
  			case XbasePackage.XCASE_PART__FALL_THROUGH:
  				setFallThrough(FALL_THROUGH_EDEFAULT);
  				return;
  		}
  		super.eUnset(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated