code: public Observable<NetworkSecurityGroupInner> updateTagsAsync(String resourceGroupName, String networkSecurityGroupName, Map<String, String> tags) {
          return updateTagsWithServiceResponseAsync(resourceGroupName, networkSecurityGroupName, tags).map(new Func1<ServiceResponse<NetworkSecurityGroupInner>, NetworkSecurityGroupInner>() {
              @Override
              public NetworkSecurityGroupInner call(ServiceResponse<NetworkSecurityGroupInner> response) {
                  return response.body();
              }
          });
      }
docs: Updates a network security group tags.
  
  @param resourceGroupName The name of the resource group.
  @param networkSecurityGroupName The name of the network security group.
  @param tags Resource tags.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request