test for Graphviz
<graphviz dot center > digraph finite_state_machine {
node [shape = box]; AssetSyncer -> FileSendTransporter; AssetSyncer -> FileReceiveTransporter;
//rankdir=LR; //size="9,5" //node [shape = doublecircle]; LR_0 LR_3 LR_4 LR_8; //node [shape = circle]; //LR_0 -> LR_2 [ label = "SS(B)" ];
} </graphviz>