KT element: KtWhenExpression
FIR element: FirWhenExpressionImpl
FIR source kind: KtRealSourceElementKind

FIR element rendered:
when (R|<local>/x|) {
    ($subj$ is R|kotlin/String|) ->  {
        String(1)
    }
    else ->  {
        String(2)
    }
}

FIR FILE:
FILE: [ResolvedTo(IMPORTS)] whenExpressionScript.kts
    public final [ResolvedTo(RAW_FIR)] fun foo([ResolvedTo(RAW_FIR)] x: R|kotlin/Any|): R|kotlin/String| {
        ^foo when (R|<local>/x|) {
            ($subj$ is R|kotlin/String|) ->  {
                String(1)
            }
            else ->  {
                String(2)
            }
        }

    }
    [ResolvedTo(RAW_FIR)] lval args: R|kotlin/Array<kotlin/String>|<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|
