code: public ServiceFuture<VpnGatewayInner> beginUpdateTagsAsync(String resourceGroupName, String gatewayName, final ServiceCallback<VpnGatewayInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginUpdateTagsWithServiceResponseAsync(resourceGroupName, gatewayName), serviceCallback);
      }
docs: Updates virtual wan vpn gateway tags.
  
  @param resourceGroupName The resource group name of the VpnGateway.
  @param gatewayName The name of the gateway.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object