docs: protected Statement classBlock(final RunNotifier notifier) {
          Statement statement = childrenInvoker(notifier);
          if (!areAllChildrenIgnored()) {
              statement = withBeforeClasses(statement);
              statement = withAfterClasses(statement);
              statement = withClassRules(statement);
              statement = withInterruptIsolation(statement);
          }
          return statement;
      }