plugins/javaFX/testData/optimizeImports/staticPropertiesAttrAndCustomComponents.fxml

<?import javafx.scene.control.Button?>
<?import javafx.scene.layout.GridPane?>
<?import MyGridPane?>
<MyGridPane xmlns:fx="http://javafx.com/fxml" alignment="center" hgap="10" vgap="10">
    <Button GridPane.columnIndex="0"/>
</MyGridPane>