YamlConfigCodec
class YamlConfigCodec<T : Any>(serializer: KSerializer<T>, yaml: Yaml = DefaultYaml.instance) : ConfigCodec<T>
YAML codec backed by kotlinx.serialization + Kaml.
Java compatibility note
Java plugins can still use typed configs by providing their own ConfigCodec implementation (e.g. Jackson). This codec is provided as a batteries-included default for Kotlin users.