anchor.diff:  [source,js]
   ----
   {
  -    "inV": [],
  -    "id": 1,
  -    "label": "vertex",
  -    "type": "vertex",
  -    "outV": [
  +    "inE": [],
  +    "outE": [
           {
               "inV": 3,
               "inVLabel": "vertex",
  
positive.code: ----
  {
      "@class": "java.util.HashMap",
      "inV": [
          "java.util.ArrayList",
          []
      ],
      "id": 1,
      "label": "vertex",
      "type": "vertex",
      "outV": [
          "java.util.ArrayList",
          [
              {
  
negative.code:                 "label": "knows",
                  "type": "edge",
                  "outV": 1,
                  "hiddens": {
                      "@class": "java.util.HashMap"
                  },
                  "properties": {
                      "@class": "java.util.HashMap",
                      "weight": [
  