arangosh> var examples = require("org/arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("routeplanner");
arangosh> graph._commonNeighbors(
........>   'germanCity/Hamburg',
........>   {},
........>   {direction : 'outbound', maxDepth : 2},
........>   {direction : 'outbound', maxDepth : 2});
[ 
  { 
    "germanCity/Hamburg" : { 
      "germanCity/Berlin" : [ 
        { 
          "_id" : "germanCity/Cologne", 
          "_key" : "Cologne", 
          "_rev" : "1069049282", 
          "isCapital" : false, 
          "population" : 1000000 
        }, 
        { 
          "_id" : "frenchCity/Lyon", 
          "_key" : "Lyon", 
          "_rev" : "1069639106", 
          "isCapital" : false, 
          "population" : 80000 
        }, 
        { 
          "_id" : "frenchCity/Paris", 
          "_key" : "Paris", 
          "_rev" : "1069835714", 
          "isCapital" : true, 
          "population" : 4000000 
        } 
      ], 
      "germanCity/Cologne" : [ 
        { 
          "_id" : "frenchCity/Lyon", 
          "_key" : "Lyon", 
          "_rev" : "1069639106", 
          "isCapital" : false, 
          "population" : 80000 
        }, 
        { 
          "_id" : "frenchCity/Paris", 
          "_key" : "Paris", 
          "_rev" : "1069835714", 
          "isCapital" : true, 
          "population" : 4000000 
        } 
      ], 
      "frenchCity/Paris" : [ 
        { 
          "_id" : "frenchCity/Lyon", 
          "_key" : "Lyon", 
          "_rev" : "1069639106", 
          "isCapital" : false, 
          "population" : 80000 
        } 
      ] 
    } 
  } 
]