@Override
  public void start() {
    LOGGER.info("Starting {}.", this);
    LOGGER.debug("Adding {} to {}.", this, alertingSessionRegistry);
    alertingSessionRegistry.addAlertingSessionListener(this);
    super.start();
  }
Builds AlertAppender instances.

@param <B> The type to build
geode-log4j/src/main/java/org/apache/geode/alerting/log4j/internal/impl/AlertAppender.java