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How to access the appropriate Node controller attached to

For this controller, is there any built-in way to access the node to which the controller is "connected" without specifying the FXML identifier and a specific annotation? I cannot find anything related to this in the official documentation or search on the Internet.

For example, how do I access HBox from org.example.FooController

<HBox xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="org.example.FooController">
   <children>
      <Button mnemonicParsing="false" text="Button" />
   </children>
</HBox>

At the moment, I just gave node the FXML identifier "root", and then used the following in my controller, but it seems like I'm missing a trick ...

@FXML
private Node root
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1 answer

, , , .

fx: id "root" @FXML

@FXML
private Node root
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