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I have this code

...
ObservableList<Media> audio = controller.getAudioTabPageController().getMediasListView();
ObservableList<Media> image = controller.getImageTabPageController().getMediasListView();
ObservableList<Media> video = controller.getVideoTabPageController().getMediasListView();

ObservableList<Media> medias = FXCollections.concat(audio, image, video);
...

but i got this in FXCollections.concat()

unchecked generic array creation for varargs parameter

What is exactly going wrong and how would I fix it, as I suppose leaving unchecked warnings in the code is not a good idea?

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