@Override
    public Boolean fromString(final String s, final @NotNull ConvertContext context) {
      if ("true".equalsIgnoreCase(s)) {
        return Boolean.TRUE;
      }
      if ("false".equalsIgnoreCase(s)) {
        return Boolean.FALSE;
      }
      return null;
    }
@Override
    public Boolean fromString(final String s, final @NotNull ConvertContext context)