anchor.diff:  application/vnd.refract+json
   application/vnd.refract.parse-result+json
   ```
  -
  -##### API Blueprint AST (Deprecated)
  -
  -API Blueprint AST support is deprecated and support will be completely removed
  -from the service by February 28th 2016.
  -
  -```
  -application/vnd.apiblueprint.ast+json
  -application/vnd.apiblueprint.ast+yaml
  -```
  -
  -Serialized API Blueprint AST represented either in its JSON or YAML format as defined in [API Blueprint AST Serialization Media Types](https://github.com/apiaryio/api-blueprint-ast).
  -
  -Please keep in mind that the API Blueprint AST is soon to be deprecated in favor of the API Description Parse Result Namespace.
   
   #### Output Media Types
   
  
positive.code: + Response 200 (text/vnd.apiblueprint)
  
          :[](fixtures/apib/composer.apib)
  
  + Request Compose API Blueprint from AST 2.0 sent as YAML (application/vnd.apiblueprint.ast+yaml; version=2.0)
  
          :[](fixtures/apib/normal.apiblueprint.ast.yaml)
  
  + Response 200 (text/vnd.apiblueprint)
  
          :[](fixtures/apib/normal.apib)
  
  + Request Compose API Blueprint from AST 2.0 sent as JSON (application/vnd.apiblueprint.ast+json; version=2.0)
  
          :[](fixtures/apib/normal.apiblueprint.ast.json)
  
  + Response 200 (text/vnd.apiblueprint)
  
          :[](fixtures/apib/normal.apib)
  
negative.code: Reverse the parsing process--compose an API description format.
  
  ### Compose [POST]
  
  #### Input Media Types
  
  