anchor.diff:  === Test an analyzer
   
   The <<indices-analyze,`analyze` API>> is an invaluable tool for viewing the
  -terms produced by an analyzer. A built-in analyzer (or combination of built-in
  -tokenizer, token filters, and character filters) can be specified inline in
  +terms produced by an analyzer. A built-in analyzer can be specified inline in
   the request:
   
   [source,console]
  
positive.code:   "analyzer": "whitespace",
    "text":     "The quick brown fox."
  }
  
  POST _analyze
  {
    "tokenizer": "standard",
  
negative.code: }
  -------------------------------------
  
  The API returns the following response:
  
  [source,console-result]
  -------------------------------------
  {
    "tokens": [
      {
        "token": "is",
        "start_offset": 0,
        "end_offset": 2,
        "type": "<ALPHANUM>",
        "position": 0
      },
      {
        "token": "this",
        "start_offset": 3,
        "end_offset": 7,
        "type": "<ALPHANUM>",
        "position": 1
      },
      {
        "token": "deja",
        "start_offset": 8,
        "end_offset": 12,
        "type": "<ALPHANUM>",
        "position": 2
      },
      {
        "token": "vu",
        "start_offset": 13,
        "end_offset": 15,
        "type": "<ALPHANUM>",
        "position": 3
      }
    ]
  }
  -------------------------------------
  
  <1> Define a `custom` analyzer called `std_folded`.
  <2> The field `my_text` uses the `std_folded` analyzer.
  <3> To refer to this analyzer, the `analyze` API must specify the index name.
  