code: public ServiceFuture<SignalRResourceInner> beginCreateOrUpdateAsync(String resourceGroupName, String resourceName, SignalRCreateParameters parameters, final ServiceCallback<SignalRResourceInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, resourceName, parameters), serviceCallback);
      }
docs: Create a new SignalR service and update an exiting SignalR service.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param resourceName The name of the SignalR resource.
  @param parameters Parameters for the create or update operation
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object