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