> curl --data @- -X POST --dump - http://localhost:8529/_api/grap/graph1/vertices/id2
{
  "batchSize" : 100, 
  limit : 10, 
  count : true, 
  "filter" : { 
    "direction" : "out", 
    "properties" : [
      {
        "key" : "optional1",
        "value" : "val1",
        "compare" : "=="
      },
      {
        "key" : "optional2",
        "value" : 2,
        "compare" : "=="
      }
    ]
  }
}

HTTP/1.1 201 Created
content-type: application/json; charset=utf-8

{
  "result": [
    {
      "_id": "v/id3",
      "_rev": "47810529",
      "_key": "id3",
      "optional2": 2,
      "optional1": "val1"
    }
  ],
  "hasMore": false,
  "error": false,
  "count" : 1,
  "code": 201
}