any way to modify existing instance's fields rather than creating new instances?

[portlek]

node.get(XXXConfig.class, emptyInstance);
this one returns different instances every single time, is there any way to use existing instance to modify the fields only?

[Machine-Maker]

You can get a Mutable ObjectFactory which you can then load an existing instance from a configuration node.

ObjectMapper.Factory factory = (ObjectMapper.Factory) Objects.requireNonNull(node.options().serializers().get(type));
ObjectMapper.Mutable<T> mutable = (ObjectMapper.Mutable<T>) factory.get(type);
mutable.load(instance, node);

[portlek]

is this a right approach?

@SneakyThrows
private void reload(final boolean ensureAsync) {
  if (ensureAsync) {
    PluginExceptions.ensureAsync();
  }
  synchronized (this.lock) {
    final var loader = Configurate.yaml(
      this.directory.resolve("messages.yaml")
    );
    final var node = loader.load();
    final var factory = (ObjectMapper.Factory) Objects.requireNonNull(node.options().serializers().get(AnnouncementMessages2.class));
    final var mutable = (ObjectMapper.Mutable<AnnouncementMessages2>) factory.get(AnnouncementMessages2.class);
    mutable.load(this, node);
    node.set(AnnouncementMessages2.class, this);
    loader.save(node);
  }
}