}
    }

    private Field getFieldIfExists(String fieldName) {
        try {
            return FessHtmlPath.class.getDeclaredField(fieldName);
        } catch (NoSuchFieldException e) {
            return null;
        }
    }

  static <T> FieldSetter<T> getFieldSetter(Class<T> clazz, String fieldName) {
    try {
      Field field = clazz.getDeclaredField(fieldName);
      return new FieldSetter<>(field);
    } catch (NoSuchFieldException e) {
      throw new AssertionError(e); // programmer error
    }
  }

  // Secret sauce for setting final fields; don't make it public.
  static final class FieldSetter<T> {

    }

    /**
     * Test field types match expected types
     */
    @Test
    @DisplayName("Test field types are correct")
    public void testFieldTypes() throws NoSuchFieldException {
        // Verify field types
        assertEquals(byte.class, ServerData.class.getDeclaredField("sflags").getType());
        assertEquals(int.class, ServerData.class.getDeclaredField("sflags2").getType());