code: public NetworkWatcherInner updateTags(String resourceGroupName, String networkWatcherName, Map<String, String> tags) {
          return updateTagsWithServiceResponseAsync(resourceGroupName, networkWatcherName, tags).toBlocking().single().body();
      }
docs: Updates a network watcher tags.
  
  @param resourceGroupName The name of the resource group.
  @param networkWatcherName The name of the network watcher.
  @param tags Resource tags.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the NetworkWatcherInner object if successful.