writeNodeGroup(group.delegate, nodesById)
                }

                is CompositeNodeGroup -> {
                    writeSmallInt(2)
                    writeBoolean(group.isReachableFromEntryPoint)
                    writeNodeGroup(group.ordinalGroup, nodesById)
                    writeCollection(group.finalizerGroups) {
                        writeNodeGroup(it, nodesById)
                    }