class NTv2Transform extends AbstractMathTransform implements MathTransform2D, Serializable {

    @Override
    public ParameterValueGroup getParameterValues() {
        final ParameterValue<URI> file = new Parameter<URI>(Provider.FILE);
        file.setValue(grid);

        return new ParameterGroup(Provider.PARAMETERS,
            new ParameterValue[] { file }
        );
    }

    public  NTv2Transform(URI file);

}