@Override
    public void read(JmeImporter importer) throws IOException {
        InputCapsule capsule = importer.getCapsule(this);
        x = capsule.readFloat("x", 0);
        y = capsule.readFloat("y", 0);
        z = capsule.readFloat("z", 0);
    }
De-serializes from the argument, for example when loading from a J3O
file.

@param importer the importer to use (not null)
@throws IOException from the importer
jme3-core/src/main/java/com/jme3/math/Vector3f.java