public static boolean isKDE() {
    return StringUtils.isNotBlank( System.getenv( "KDE_SESSION_VERSION" ) );
  }
@Test
  public void testIsKDE() {
    final String kdeVersion = System.getenv( "KDE_SESSION_VERSION" );
    assertEquals( kdeVersion != null && !kdeVersion.isEmpty(), Const.isKDE() );
  }