code: public LocalNetworkGatewayInner beginUpdateTags(String resourceGroupName, String localNetworkGatewayName, Map<String, String> tags) {
          return beginUpdateTagsWithServiceResponseAsync(resourceGroupName, localNetworkGatewayName, tags).toBlocking().single().body();
      }
docs: Updates a local network gateway tags.
  
  @param resourceGroupName The name of the resource group.
  @param localNetworkGatewayName The name of the local network gateway.
  @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 LocalNetworkGatewayInner object if successful.