attempt to load public fx:contoller method without "@FXML" annotation leads to
Controller method "handleButtonAction" is not visible to markup.

with "@FXML" - works fine.
sample files:
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<VBox fx:controller="com.foo.MyController"
xmlns:fx="http://javafx.com/fxml">
<children>
<Button text="Click Me!" onAction="#handleButtonAction"/>
</children>
</VBox>
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package com.foo;
public class MyController {
public void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
}
}
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