arangosh> var examples = require("@arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("routeplanner");
arangosh> graph._closeness({weight : 'distance'});
{
"frenchCity/Lyon" : 0.7323943661971832,
"frenchCity/Paris" : 0.8125,
"germanCity/Berlin" : 0.7323943661971832,
"germanCity/Cologne" : 1,
"germanCity/Hamburg" : 0.8666666666666666
}