nullListItemProperty
fun <T> Preset.nullListItemProperty(parent: CSHasRegistrationsHasDestruct, key: String, values: List<T>, default: T? = null, onChange: (value: T?) -> Unit? = null): CSListItemNullablePresetProperty<T?>
fun <T> Preset.nullListItemProperty(parent: CSHasRegistrationsHasDestruct, key: String, getValues: () -> List<T>, default: T? = null, onChange: (value: T?) -> Unit? = null): CSListItemNullablePresetProperty<T?>