value-api.java

// data api
Optional<DisplayNameData> wrappedDisplayName = entity.getData(DisplayNameData.class);
if (wrappedDisplayName.isPresent()) {
  DisplayNameData displayname = wrappedDisplayName.get();
  displayname.setDisplayName(Texts.of(displayName.get(), "hai!"));
  entity.offer(displayname);
}

// equivalent POJO
if (entity.displayName != null) {
  entity.displayName = Texts.of(entity.displayName, "hai!");
}

// static imports
if (entity.supports(DISPLAY_NAME)) {
  entity.set(DISPLAY_NAME, Texts.of(entity.tryGet(DISPLAY_NAME)), "hai!");
}

// value api
if (entity.supports(Values.DISPLAY_NAME)) {
  entity.set(Values.DISPLAY_NAME, Texts.of(entity.tryGet(Values.DISPLAY_NAME)), "hai!");
}

// inverted value api fun!
if (Values.DISPLAY_NAME.supportedBy(entity)) {
  Values.DISPLAY_NAME.set(entity, Texts.of(Values.DISPLAY_NAME.tryGet(entity), "hai!");
}

// bound data?
BoundValue<Text> displayName = entity.bind(Values.DISPLAY_NAME)
if (displayName.exists() {
  displayName.set(Texts.of(displayName.get(entity)), "hai!");
}

// transforms?

Values.DISPLAY_NAME.transform(entity, new Function<Text, Text>() {
  Text apply(Text input) {
    return Texts.of(input, "hai!");
  }
});

// j8
Values.DISPLAY_NAME.transform(entity, (Text input) -> Texts.of(input, "hai!"));

// there's still some verbosity in terms of doing Values.DISPLAY_NAME, but I don't think it's fixable