}
}

private class ControlFlowGraphIndex(graphProvider: () -> ControlFlowGraph) {
    private val mapping: Map<FirElement, List<CFGNode<*>>> by lazy {
        val result = HashMap<FirElement, MutableList<CFGNode<*>>>()

        fun addGraph(graph: ControlFlowGraph) {
            for (node in graph.nodes) {
                result.getOrPut(node.fir) { SmartList() }.add(node)