code: public ServiceFuture<List<HybridRunbookWorkerGroupInner>> listByAutomationAccountAsync(final String resourceGroupName, final String automationAccountName, final ListOperationCallback<HybridRunbookWorkerGroupInner> serviceCallback) {
          return AzureServiceFuture.fromPageResponse(
              listByAutomationAccountSinglePageAsync(resourceGroupName, automationAccountName),
              new Func1<String, Observable<ServiceResponse<Page<HybridRunbookWorkerGroupInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<HybridRunbookWorkerGroupInner>>> call(String nextPageLink) {
                      return listByAutomationAccountNextSinglePageAsync(nextPageLink);
                  }
              },
              serviceCallback);
      }
docs: Retrieve a list of hybrid runbook worker groups.
  
  @param resourceGroupName Name of an Azure Resource group.
  @param automationAccountName The name of the automation account.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object