src/main/java/de/digitalcollections/iiif/model/jackson/IiifModule.java
private <T> Converter<String, T> fromString(Function<String, ? extends T> fun) {
    return new StdConverter<String, T>() {
      @Override
      public T convert(String value) {
        return fun.apply(value);
      }
    };
  }
private <T> Converter<String, T> fromString(Function<String, ? extends T> fun) {
    return new StdConverter<String, T>() {
      @Override
      public T convert(String value) {
        return fun.apply(value);
      }
    };
  }
Helper function to create Converter from lambda *