-graph: { title: "n26" label: "26" status:clustered color:yellow
-edge: {sourcename: "n26" targetname: "n20" label: "0" color: red}
-node: {title: "n28" label: "Return 28" info1: "visited: 5
+graph: { title: "n28" label: "28" status:clustered color:yellow
+edge: {sourcename: "n28" targetname: "n22" label: "0" color: red}
+node: {title: "n30" label: "Return 30" info1: "visited: 5
+return in method of type EMPTY_main