code: @Override
  	public void eUnset(int featureID)
  	{
  		switch (featureID)
  		{
  			case XbasePackage.XASSIGNMENT__ASSIGNABLE:
  				setAssignable((XExpression)null);
  				return;
  			case XbasePackage.XASSIGNMENT__VALUE:
  				setValue((XExpression)null);
  				return;
  			case XbasePackage.XASSIGNMENT__EXPLICIT_STATIC:
  				setExplicitStatic(EXPLICIT_STATIC_EDEFAULT);
  				return;
  			case XbasePackage.XASSIGNMENT__STATIC_WITH_DECLARING_TYPE:
  				setStaticWithDeclaringType(STATIC_WITH_DECLARING_TYPE_EDEFAULT);
  				return;
  		}
  		super.eUnset(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated