JavaFX image url

Hello everybody!
I have troubles understanding the way image urls work in JavaFX.
The tutorials only use __DIR__, which of course references the package the script lies in or an absolute URL.
But i dont want to place an image folder inside my package structure but on project level instead.
Is there something like e.g: "platform:img/image.pgn" ?
or is it absolutely necessary to place images inside the package itself?
Thank in advance for your answers!
Flowqi

you can use an image URL instead of __DIR__ and path of image
Stage {
    scene: Scene {
        width: 500
        height: 400
        content: [
            ImageView {
                image: Image {
                    url: "http://farm2.static.flickr.com/1357/855466139_2c7537e555.jpg"
}

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