How to instanciate FaceRecognizer in Java

I want to use `org.opencv.contrib.FaceRecognizer` from `opencv-2413.jar`. How can I instanciate FaceRecognizer object?

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These do not work: FaceRecognizer rec = new FaceRecognizer(); FaceRecognizer rec = createLBPHFaceRecognizer(); FaceRecognizer rec = createEigenFaceRecognizer(); FaceRecognizer rec = createFisherFaceRecognizer();