}
            }
        }

        addGraph(graphProvider())

        return@lazy result
    }

    /**
     * Find the last node in a graph (or its subgraphs) that point to the given [fir] element.
     */
    fun findLast(fir: FirElement): CFGNode<*>? {
        val directNodes = mapping[fir]
        if (directNodes != null) {
            return directNodes.last()
        }