avocado> var Graph = require("graph").Graph;

avocado> g = new Graph("graph", "vertices", "edges");
Graph("vertices", "edges")

avocado> v1 = g.addVertex();
Vertex(<graph>, "179962:10521976")

avocado> v2 = g.addVertex();
Vertex(<graph>, "179962:10653048")

avocado> e = g.addEdge(v1, v2);
Edge(<graph>, "2141724:10784120")

avocado> g.removeVertex(v1);

avocado> v2.edges();
[ ]