anchor.diff:  --------------------------------------------------
   // CONSOLE
   // TEST[continued]
  +
  +<1> Prefix used to search for suggestions
  +<2> Type of suggestions
  +<3> Name of the field to search for suggestions in
   
   returns this response:
   
  
positive.code: 
  [source,js]
  --------------------------------------------------
  POST music/_search?size=0
  {
      "_source": "suggest",
      "suggest": {
          "song-suggest" : {
              "prefix" : "nir",
              "completion" : {
                  "field" : "suggest"
              }
          }
      }
  
negative.code: --------------------------------------------------
  // CONSOLE
  // TEST[continued]
  
  <1> Filter the source to return only the `suggest` field
  <2> Name of the field to search for suggestions in
  <3> Number of suggestions to return
  
  Which should look like:
  
  