code: @Override
  	public void eUnset(int featureID)
  	{
  		switch (featureID)
  		{
  			case XbasePackage.XABSTRACT_FEATURE_CALL__FEATURE:
  				setFeature((JvmIdentifiableElement)null);
  				return;
  			case XbasePackage.XABSTRACT_FEATURE_CALL__TYPE_ARGUMENTS:
  				getTypeArguments().clear();
  				return;
  			case XbasePackage.XABSTRACT_FEATURE_CALL__IMPLICIT_RECEIVER:
  				setImplicitReceiver((XExpression)null);
  				return;
  			case XbasePackage.XABSTRACT_FEATURE_CALL__INVALID_FEATURE_ISSUE_CODE:
  				setInvalidFeatureIssueCode(INVALID_FEATURE_ISSUE_CODE_EDEFAULT);
  				return;
  			case XbasePackage.XABSTRACT_FEATURE_CALL__IMPLICIT_FIRST_ARGUMENT:
  				setImplicitFirstArgument((XExpression)null);
  				return;
  		}
  		super.eUnset(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated