public void addChangedEventListener(final String discoveryId, final DataChangedEventListener dataChangedEventListener) {
        this.dataChangedEventListenerMap.put(discoveryId, dataChangedEventListener);
    }
addChangedEventListener.

@param discoveryId discoveryId
@param dataChangedEventListener dataChangedEventListener
shenyu-admin/src/main/java/org/apache/shenyu/admin/discovery/AbstractDiscoveryProcessor.java