@Override
    public void read(JmeImporter importer) throws IOException {
        super.read(importer);
        InputCapsule capsule = importer.getCapsule(this);
        xExtent = capsule.readFloat("xExtent", 0);
        yExtent = capsule.readFloat("yExtent", 0);
        zExtent = capsule.readFloat("zExtent", 0);
    }
Reconfigure with the specified extremes.

@param min the desired minimum coordinate value for each axis (not null,
not altered)
@param max the desired maximum coordinate value for each axis (not null,
not altered)
jme3-core/src/main/java/com/jme3/bounding/BoundingBox.java