code: public void setElse(XExpression newElse)
  	{
  		if (newElse != else_)
  		{
  			NotificationChain msgs = null;
  			if (else_ != null)
  				msgs = ((InternalEObject)else_).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - XbasePackage.XIF_EXPRESSION__ELSE, null, msgs);
  			if (newElse != null)
  				msgs = ((InternalEObject)newElse).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - XbasePackage.XIF_EXPRESSION__ELSE, null, msgs);
  			msgs = basicSetElse(newElse, msgs);
  			if (msgs != null) msgs.dispatch();
  		}
  		else if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, XbasePackage.XIF_EXPRESSION__ELSE, newElse, newElse));
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated