anchor.diff:  
   Note that registered extensions are inherited within test class hierarchies.
   
  +[[extension-registration-declarative]]
   ==== Declarative Extension Registration
   
   Developers can register one or more extensions _declaratively_ by annotating a test
  
positive.code: The execution of tests in both `MyTestsV1` and `MyTestsV2` will be extended by the
  `FooExtension` and `BarExtension`, in exactly that order.
  
  ==== Programmatic Extension Registration
  
  Developers can register one or more extensions _programmatically_ by implementing the
  
negative.code: JUnit 4, the JUnit 5 extension model consists of a single, coherent concept: the
  `Extension` API. Note, however, that `Extension` itself is just a marker interface.
  
  [[extension-registration]]
  === Registering Extensions
  
  Extensions can be registered either declaratively via `{ExtendWith}` or programmatically
  