@Test
public void testAddVlanToSwitchPort()
{

    Configuration configuration = Configuration.parse( interfacesFile );
    CumulusVlanHelper helper = new CumulusVlanHelper( null );
    SwitchVlan vlan = new SwitchVlan();
    vlan.setId( "1200" );
    vlan.setTaggedPorts( new HashSet<String>() );
    vlan.getTaggedPorts().add( "swp2" );
    vlan.getTaggedPorts().add( "swp4" );
    try
    {
        helper.updateVlanConfiguration( vlan, configuration );
    }
    catch ( HmsOobNetworkException e )
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println( configuration.getString() );
}