如何在JavaFX中逐个展示StrokeTransition的ArrayList？

import javafx.animation.StrokeTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
import javafx.util.Duration;

import java.util.ArrayList;

public class StrokeTransitionDemo extends Application {

    @Override
    public void start(Stage primaryStage) {
        // 创建一个矩形
        Rectangle rect = new Rectangle(50, 50, 100, 100);
        rect.setStroke(Color.BLACK);

        // 创建一个Group并将矩形添加到其中
        Group root = new Group(rect);

        // 创建场景
        Scene scene = new Scene(root, 300, 250);

        // 设置舞台
        primaryStage.setTitle("StrokeTransition Demo");
        primaryStage.setScene(scene);
        primaryStage.show();

        // 创建一个ArrayList来存储StrokeTransition对象
        ArrayList<StrokeTransition> transitions = new ArrayList<>();

        // 创建并添加第一个StrokeTransition
        StrokeTransition transition1 = new StrokeTransition(Duration.seconds(1), rect);
        transition1.setFromValue(Color.BLACK);
        transition1.setToValue(Color.RED);
        transitions.add(transition1);

        // 创建并添加第二个StrokeTransition
        StrokeTransition transition2 = new StrokeTransition(Duration.seconds(1), rect);
        transition2.setFromValue(Color.RED);
        transition2.setToValue(Color.BLUE);
        transitions.add(transition2);

        // 创建一个SequentialTransition来逐个播放transitions中的动画
        SequentialTransition sequentialTransition = new SequentialTransition();
        for (StrokeTransition transition : transitions) {
            sequentialTransition.getChildren().add(transition);
        }

        // 播放SequentialTransition
        sequentialTransition.play();
    }

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

transitions.get(0).play(); // 播放第一个动画
transitions.get(0).setOnFinished(event -> transitions.get(1).play()); // 第一个动画完成后播放第二个动画