FILE: backingFieldWithSmartTypeParameters.kt
    public final val items: R|kotlin/collections/List<kotlin/String>|
        private <explicit backing field>: R|kotlin/collections/MutableList<kotlin/String>| = R|kotlin/collections/mutableListOf|<R|kotlin/String|>()
        public get(): R|kotlin/collections/List<kotlin/String>|
    public final fun test(): R|kotlin/Unit| {
        R|/items|.R|SubstitutionOverride<kotlin/collections/MutableList.add: R|kotlin/Boolean|>|(String(one more item))
    }
