arangosh> var examples = require("org/arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("social");
arangosh> graph.male.save({neym: "Jon", _key: "john"});
{
"_id" : "male/john",
"_rev" : "1783421383",
"_key" : "john"
}
arangosh> graph.male.replace("male/john", {name: "John"});
{
"_id" : "male/john",
"_rev" : "1783617991",
"_key" : "john"
}