}

    private void afterSessionStart(MavenSession session) throws MavenExecutionException {
        callListeners(session, AbstractMavenLifecycleParticipant::afterSessionStart);
    }

    private void afterProjectsRead(MavenSession session) throws MavenExecutionException {
        callListeners(session, AbstractMavenLifecycleParticipant::afterProjectsRead);
    }

      Listener oldHead = listeners();
      if (oldHead != Listener.TOMBSTONE) {
        Listener newNode = new Listener(listener, executor);
        do {
          newNode.next = oldHead;
          if (casListeners(oldHead, newNode)) {
            return;
          }
          oldHead = listeners(); // re-read
        } while (oldHead != Listener.TOMBSTONE);
      }
    }