anchor.diff:  
   ===== Request Body
   
  -//TBD: Test these properties, since they didn't work on older build.
  -
  -`from`::
  +`page`::
  +`from`:::
     (integer) Skips the specified number of categories.
  -
  -`size`::
  +`size`:::
     (integer) Specifies the maximum number of categories to obtain.
   
   
  
positive.code:     {
        "job_id": "it_ops_new_logs",
        "category_id": 1,
        "terms": "Actual Transaction Already Voided Reversed hostname
        dbserver.acme.com physicalhost esxserver1.acme.com vmhost app1.acme.com",
        "regex": ".*?Actual.+?Transaction.+?Already.+?Voided.+?Reversed.+?hostname.
        +?dbserver.acme.com.+?physicalhost.+?esxserver1.acme.com.+?vmhost.
        +?app1.acme.com.*",
        "max_matching_length": 137,
        "examples": [
          "Actual Transaction Already Voided / Reversed;hostname=dbserver.acme.com;
          physicalhost=esxserver1.acme.com;vmhost=app1.acme.com"
        ]
      },
    ...
    ]
  }
  ----
  
negative.code: 
  ===== Examples
  
  The following example gets information about one category for the
  `it_ops_new_logs` job:
  
  [source,js]
  --------------------------------------------------
  GET _xpack/ml/anomaly_detectors/it_ops_new_logs/results/categories
  {
    "page":{
      "size": 1
    }
  }
  --------------------------------------------------
  // CONSOLE
  // TEST[skip:todo]
  
  In this example, the API returns the following information:
  [source,js]
  ----
  {
  