ClassCastException for unknown destination type

import java.io.IOException;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.destination.PDDestination;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineItem;
import org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline.PDOutlineNode;

public class TestPDDestination {

	public static void main(String[] args) throws IOException {
		PDDocument doc = PDDocument.load("Speisepläne.pdf");
		traverse(doc.getDocumentCatalog().getDocumentOutline());
		doc.close();
	}
	
	static void traverse(PDOutlineNode node) throws IOException {
		if (node instanceof PDOutlineItem) {
			PDDestination dst = ((PDOutlineItem) node).getDestination();
			/**
			 * throws java.lang.ClassCastException: org.apache.pdfbox.cos.COSFloat cannot be cast to org.apache.pdfbox.cos.COSName,
			 * but should be something like a PDPageXYZDestination!
			 */
			System.out.println(dst);
		}
		for (PDOutlineItem child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
			traverse(child);
		}
	}
}