anchor.diff:  
   If no template is supplied, the build process will call `doxygen -g` to generate a default template.
   
  -Output directory is set via `outputDir`. The default output directory, if not supplied, is `${buildDir}/docs/doxygen`.
  +The output directory is set via `outputDir`. The default output directory, if not supplied, is `${buildDir}/docs/doxygen`.
   
   [source,groovy]
   ----
  
positive.code: 
  
  For backwards compatibility with 0.2 and 0.1 it is still possible to just
   specify
  
  [source,groovy]
  ----
  
negative.code: }
  ----
  
  It is also possible to define a custom {doxygen} tasks
  
  [source,groovy]
  ----
  