/plusAssignPrecedence.fir.kt:(2202,2204): error: Unresolved reference 'plusAssign'.

/plusAssignPrecedence.fir.kt:(2227,2229): error: Unresolved reference 'plusAssign'.

/plusAssignPrecedence.fir.kt:(2308,2310): error: Ambiguity between assign operator candidates:
fun plus(v: String): StringPropertyWithPlusAndPlusAssign
fun plusAssign(v: String): Unit
