@Test
public void testFilter3()
                        throws XMLStreamException, FactoryConfigurationError, IOException {

    Filter result = parse( "v100/testfilter3.xml" );
    OperatorFilter opFilter = (OperatorFilter) result;
    Not op = (Not) opFilter.getOperator();
    Disjoint op1 = (Disjoint) op.getParameter();
    Object[] params = op1.getParams();
    assertEquals( "Geometry", ( (ValueReference) params[0] ).getAsText() );
}