docs: @Deprecated
      protected void validateInstanceMethods(List<Throwable> errors) {
          validatePublicVoidNoArgMethods(After.class, false, errors);
          validatePublicVoidNoArgMethods(Before.class, false, errors);
          validateTestMethods(errors);
  
          if (computeTestMethods().isEmpty()) {
              errors.add(new Exception("No runnable methods"));
          }
      }