Reports cases when your code prevents a class from being subclassed by some framework (for example, Spring or Hibernate) at runtime.

Typical examples of necessary but impossible subclassing:

final classes marked with framework-specific annotations (for example, Spring @Configuration)
final, static or private methods marked with framework-specific annotations (for example, Spring @Transactional)
methods marked with framework-specific annotations inside final classes

The list of reported cases depends on the frameworks used.