anchor.diff:  ### Blueprint
   
   ```
  -vnd.apiblueprint+markdown
  +text/vnd.apiblueprint+markdown
   ```
   
   API Blueprint as defined in its [specification](https://github.com/apiaryio/api-blueprint/blob/master/API%20Blueprint%20Specification.md).
  
positive.code:                                 schema:
          error: null
          warnings: []
          
  
  ## Blueprint Composer [/composer]
  API Blueprint AST Media Types to API Blueprint conversions as provided by the [Matter Compiler](https://github.com/apiaryio/matter_compiler) tool.
  
  ### Compose [POST]
  Convert a serialized API Blueprint AST (`vnd.apiblueprint.ast.raw+json` or `vnd.apiblueprint.ast.raw+yaml`) into API Blueprint (`vnd.apiblueprint+markdown`).
  
  + Request (vnd.apiblueprint.ast.raw+yaml; version=2.0)
  
          _version: 2.0
          metadata:
  
negative.code: 
                      Hello World!
  
  + Response 200 (application/vnd.apiblueprint.parseresult.raw+yaml; version=1.0)
  
          _version: 1.0
          ast:
              _version: 2.0
              metadata:
              name:
  