anchor.diff:  This approach allows you build different kind of modular and completelly decoupled
   handlers and compose them into a pipeline to work together.
   
  -The delegation action can be done with `delegate` function. Let see a simple example:
  +The delegation response can be done with `delegate` function. Let see a simple example:
   
   [source, clojure]
   ----
   (defn handler1
     [context]
     (do-something context)
  -  (ct/delegate context))
  +  (ct/delegate)
   
   (defn handler2
     [context]
  
positive.code: (defn handler1
    [context]
    (do-something context)
    (ct/delegate context {:message "foobar"}))
  
  (defn handler2
    [context]
  
negative.code: === Body parsing
  
  _Catacumba_ comes with builtin support for conditional body parsing depending on the
  incoming content type. It consists of a routing chain that adds the `:data` entry in
  the context with the parsed data or `nil` in case of an incoming content type does not
  have an attached parser implementation.
  
  In order to use it you should prepending the `body-params` handler to your route
  chain:
  
  [source, clojure]
  