docs: public AbstractProjectAction<?> select(final Job<?, ?> job) {
          List<WarningsProjectAction> actions = job.getActions(WarningsProjectAction.class);
          for (WarningsProjectAction action : actions) {
              if (action.isInGroup(parserName)) {
                  return action;
              }
          }
          if (actions.size() == 1) { // Fallback for 3.x release
              return actions.get(0);
          }
          return null;
      }