@Override
    public Vector4f clone() {
        try {
            return (Vector4f) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new AssertionError(); // can not happen
        }
    }
Create a copy of this vector.

@return a new instance, equivalent to this one
jme3-core/src/main/java/com/jme3/math/Vector4f.java