anchor.diff:  
   === Zipkin Consumer
   
  -There is a special convenience annotation for setting up a message consumer 
  +There is a special convenience annotation for setting up a message consumer
   for the Span data and pushing it into a Zipkin `SpanStore`. This application
   
   [source,java]
  
positive.code: :github-raw: http://raw.github.com/{github-repo}/{github-tag}
  :github-code: http://github.com/{github-repo}/tree/{github-tag}
  :toc: left
  
  Spring Cloud Sleuth
  ====================
  
negative.code: that exports everything and a `PercentageBasedSampler` that samples a
  fixed fraction of spans.
  
  NOTE: the `PercentageBasedSampler` is the default if you are using
  `spring-cloud-sleuth-zipkin` or `spring-cloud-sleuth-stream`. You can
  configure the exports using `spring.sleuth.sampler.percentage`.
  
  A sampler can be installed just by creating a bean definition, e.g:
  