KT element: KtCallExpression
FIR element: FirFunctionCallImpl
FIR source kind: KtRealSourceElementKind

FIR element rendered:
<Unresolved name: mutableListOf>#<R|kotlin/String|>()

FIR FILE:
FILE: [ResolvedTo(IMPORTS)] insidePlusAssignTarget.kt
    public final [ResolvedTo(BODY_RESOLVE)] fun foo([ResolvedTo(BODY_RESOLVE)] x: R|kotlin/collections/MutableMap<kotlin/Int, kotlin/collections/MutableList<kotlin/String>>|): R|kotlin/Unit| {
         {
            [ResolvedTo(BODY_RESOLVE)] lval <receiver>: R|kotlin/collections/MutableMap<kotlin/Int, kotlin/collections/MutableList<kotlin/String>>| = R|<local>/x|
            R|<local>/<receiver>|.<Unresolved name: getOrPut>#(Int(1), <L> = [ResolvedTo(BODY_RESOLVE)] getOrPut@fun <anonymous>(): <ERROR TYPE REF: Unresolved name: mutableListOf> <inline=Unknown>  {
                ^ <Unresolved name: mutableListOf>#<R|kotlin/String|>()
            }
            ) = R|<local>/<receiver>|.<Unresolved name: getOrPut>#(Int(1), <L> = [ResolvedTo(BODY_RESOLVE)] getOrPut@fun <anonymous>(): <ERROR TYPE REF: Unresolved name: mutableListOf> <inline=Unknown>  {
                ^ <Unresolved name: mutableListOf>#<R|kotlin/String|>()
            }
            ).R|kotlin/plus|(String(str))
        }

    }

