anchor.diff:  
                       Hello World!
   
  -+ Response 200 (vnd.apiblueprint.parseresult.raw+yaml; version=1.0)
  ++ Response 200 (vnd.apiblueprint.parseresult.raw+yaml; version=1.0; charset=utf-8)
   
           _version: 1.0
           ast: 
  
positive.code: 
                      Hello World!
  
  + Response 200 (vnd.apiblueprint.parseresult.raw+json; version=1.0)
  
          {
              "_version": "1.0",
  
negative.code:             ]
          }
  
  + Response 200 (vnd.apiblueprint+markdown; version=1A; charset=utf-8)
  
          # /message
          ## GET
  