private val collectedMappings = HashMap<FirDeclaration, IrDeclaration>()

    val mappings: Map<FirDeclaration, IrDeclaration>
        get() = Collections.unmodifiableMap(collectedMappings)

    override fun visitElement(element: IrElement) {
        element.acceptChildrenVoid(this)
    }

    override fun visitDeclaration(declaration: IrDeclarationBase) {
        dumpDeclaration(declaration)