code: public Observable<VirtualNetworkTapInner> beginCreateOrUpdateAsync(String resourceGroupName, String tapName, VirtualNetworkTapInner parameters) {
          return beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, tapName, parameters).map(new Func1<ServiceResponse<VirtualNetworkTapInner>, VirtualNetworkTapInner>() {
              @Override
              public VirtualNetworkTapInner call(ServiceResponse<VirtualNetworkTapInner> response) {
                  return response.body();
              }
          });
      }
docs: Creates or updates a Virtual Network Tap.
  
  @param resourceGroupName The name of the resource group.
  @param tapName The name of the virtual network tap.
  @param parameters Parameters supplied to the create or update virtual network tap operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the VirtualNetworkTapInner object