Удалить второстепенные вкладки

у меня есть макет приложения:

https://i.stack.imgur.com/YsK5R.png

в результате написания кода я получаю это

https://i.stack.imgur.com/j2Nym.png

Вопрос: Как убрать верхнюю строку с закрывающимися вкладками и оставить только как на раскладке?

структура проекта:
-[источник]
.....|-[образец]
..............|- Main
..............|- пример.fxml
..............|- SampleController
..............|- Tab1.fxml
..............|- Tab1Controller
..............|- Tab2.fxml
..............|- Tab2Controller

КОД
класс Главный

package sample;  
import javafx.application.Application;  
import javafx.fxml.FXMLLoader;  
import javafx.scene.Scene;  
import javafx.scene.control.Tab;  
import javafx.scene.control.TabPane;  
import javafx.scene.layout.BorderPane;  
import javafx.stage.Stage;  
import java.io.IOException;  
public class Main extends Application {  

private Stage primary;
private BorderPane rootLayout;


@Override
public void start(Stage primary) throws Exception{
   this.primary = primary;

   initRootLayout();
   showTab();
}

private void initRootLayout() {
    try {
        FXMLLoader loader = new FXMLLoader();
        loader.setLocation(Main.class.getResource("sample.fxml"));

        rootLayout = loader.load();

        Scene scene = new Scene(rootLayout);

        primary.setScene(scene);
        primary.show();

    }catch (IOException e){
        e.printStackTrace();}

}


private void showTab() {
    try {

        FXMLLoader loaderTab1 = new FXMLLoader();
        loaderTab1.setLocation(Main.class.getResource("Tab1.fxml"));

        FXMLLoader loaderTab2 = new FXMLLoader();
        loaderTab2.setLocation(Main.class.getResource("Tab2.fxml"));

        TabPane tabPane = new TabPane();

        Tab tab1 = new Tab();
        Tab tab2 = new Tab();


        tab1.setContent(loaderTab1.load());
        tab2.setContent(loaderTab2.load());

        tabPane.getTabs().addAll(tab1,tab2);


        rootLayout.setCenter(tabPane);

    } catch (IOException e){
        e.printStackTrace();
    }



}

public static void main(String[] args) {
    launch(args);
}
}

образец.fxml

<?xml version = "1.0" encoding = "UTF-8"?>

<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.layout.BorderPane?>

<BorderPane maxHeight = "-Infinity" maxWidth = "-Infinity" minHeight = "-Infinity" minWidth = "-Infinity" prefHeight = "400.0" prefWidth = "600.0" xmlns = "http://javafx.com/javafx/8.0.172-ea" xmlns:fx = "http://javafx.com/fxml/1" fx:controller = "sample.SampleController">
   <top>
      <MenuBar BorderPane.alignment = "CENTER">
        <menus>
          <Menu mnemonicParsing = "false" text = "File">
            <items>
              <MenuItem mnemonicParsing = "false" text = "Close" />
            </items>
          </Menu>
          <Menu mnemonicParsing = "false" text = "Edit">
            <items>
              <MenuItem mnemonicParsing = "false" text = "Delete" />
            </items>
          </Menu>
          <Menu mnemonicParsing = "false" text = "Help">
            <items>
              <MenuItem mnemonicParsing = "false" text = "About" />
            </items>
          </Menu>
        </menus>
      </MenuBar>
   </top>
</BorderPane>

Tab1.fxml = Tab2.fxml = ... = Tab{n}.fxml

<?xml version = "1.0" encoding = "UTF-8"?>

<?import javafx.scene.control.Label?>
<?import javafx.scene.control.SplitPane?>
<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>

<TabPane maxHeight = "-Infinity" maxWidth = "-Infinity" minHeight = "-Infinity" minWidth = "-Infinity" prefHeight = "400.0" prefWidth = "600.0" tabClosingPolicy = "UNAVAILABLE" xmlns = "http://javafx.com/javafx/10.0.1" xmlns:fx = "http://javafx.com/fxml/1" fx:controller = "sample.Tab1Controller">
  <tabs>
      <Tab text = "Tab1">
         <content>
            <SplitPane dividerPositions = "0.29797979797979796" prefHeight = "160.0" prefWidth = "200.0">
              <items>
                <AnchorPane minHeight = "0.0" minWidth = "0.0" prefHeight = "160.0" prefWidth = "100.0">
                     <children>
                        <TableView fixedCellSize = "1.0" layoutX = "-12.0" layoutY = "27.0" prefHeight = "371.0" prefWidth = "176.0" AnchorPane.bottomAnchor = "0.0" AnchorPane.leftAnchor = "0.0" AnchorPane.rightAnchor = "0.0" AnchorPane.topAnchor = "0.0">
                          <columns>
                            <TableColumn prefWidth = "75.0" text = "C1" />
                            <TableColumn prefWidth = "75.0" text = "C2" />
                          </columns>
                           <columnResizePolicy>
                              <TableView fx:constant = "CONSTRAINED_RESIZE_POLICY" />
                           </columnResizePolicy>
                        </TableView>
                     </children></AnchorPane>
                <AnchorPane minHeight = "0.0" minWidth = "0.0" prefHeight = "160.0" prefWidth = "100.0">
                     <children>
                        <Label layoutY = "14.0" text = "Label" AnchorPane.leftAnchor = "5.0" AnchorPane.topAnchor = "14.0" />
                        <GridPane layoutX = "98.0" layoutY = "125.0" AnchorPane.leftAnchor = "5.0" AnchorPane.rightAnchor = "5.0" AnchorPane.topAnchor = "35.0">
                          <columnConstraints>
                            <ColumnConstraints hgrow = "SOMETIMES" minWidth = "10.0" prefWidth = "100.0" />
                            <ColumnConstraints hgrow = "SOMETIMES" minWidth = "10.0" prefWidth = "100.0" />
                          </columnConstraints>
                          <rowConstraints>
                            <RowConstraints minHeight = "10.0" prefHeight = "30.0" vgrow = "SOMETIMES" />
                            <RowConstraints minHeight = "10.0" prefHeight = "30.0" vgrow = "SOMETIMES" />
                            <RowConstraints minHeight = "10.0" prefHeight = "30.0" vgrow = "SOMETIMES" />
                          </rowConstraints>
                           <children>
                              <Label text = "Label" />
                              <Label text = "Label" GridPane.rowIndex = "1" />
                              <Label text = "Label" GridPane.rowIndex = "2" />
                              <Label text = "Label" GridPane.columnIndex = "1" />
                              <Label text = "Label" GridPane.columnIndex = "1" GridPane.rowIndex = "1" />
                              <Label text = "Label" GridPane.columnIndex = "1" GridPane.rowIndex = "2" />
                           </children>
                        </GridPane>
                     </children></AnchorPane>
              </items>
            </SplitPane>
         </content></Tab>
  </tabs>
</TabPane>

этот вопрос дублируется от этого: https://ru.stackoverflow.com/questions/941060/%D0%A3%D0%B1%D1%80%D0%B0%D1%82%D1%8C-%D0%B2%D1%82%D0% BE%D1%80%D0%B8%D1%87%D0%BD%D1%8B%D0%B5-%D0%B2%D0%BA%D0%BB%D0%B0%D0%B4%D0%BA %D0%B8