public String[] getSupportedExtensions() {
    return new String[] { "ktr", "xml" };
  }
@Test
  public void testGetSupportedExtensions() throws Exception {
    String[] extensions = transFileListener.getSupportedExtensions();
    assertNotNull( extensions );
    assertEquals( 2, extensions.length );
    assertEquals( "ktr", extensions[0] );
    assertEquals( "xml", extensions[1] );
  }