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