KT element: KtBinaryExpression
FIR element: FirStringConcatenationCallImpl
FIR source kind: KtRealSourceElementKind

FIR element rendered:
<strcat>(String(1), String(2), String(3))

FIR FILE:
FILE: [ResolvedTo(IMPORTS)] stringConcatenation.kt
    public final [ResolvedTo(BODY_RESOLVE)] fun check(): R|kotlin/Unit| {
        [ResolvedTo(BODY_RESOLVE)] lval value: R|kotlin/String| = <strcat>(String(1), String(2), String(3))
    }