anchor.diff:  * When using the processor within Eclipse, the check of dynamic default group sequence definitions
   doesn't work. After further investigation, it seems to be an issue with the Eclipse JSR 269 API
   implementation.
  -
  
positive.code: 
  ===== Eclipse
  
  Do the following to use the annotation processor within the http://www.eclipse.org/[Eclipse] IDE:
  
  * Right-click your project, choose "Properties"
  * Go to "Java Compiler" and make sure, that "Compiler compliance level" is set to "1.8".
  
negative.code: getter methods (optionally, see below)
  * only such annotation types are annotated with constraint annotations which are constraint
  annotations themselves
  * definition of dynamic default group sequence with `@GroupSequenceProvider` is valid
  * annotation parameter values are meaningful and valid
  * method parameter constraints in inheritance hierarchies respect the inheritance rules
  * method return value constraints in inheritance hierarchies respect the inheritance rules
  