code: public Observable<Void> createLabAsync(String resourceGroupName, String labAccountName, CreateLabProperties createLabProperties) {
          return createLabWithServiceResponseAsync(resourceGroupName, labAccountName, createLabProperties).map(new Func1<ServiceResponse<Void>, Void>() {
              @Override
              public Void call(ServiceResponse<Void> response) {
                  return response.body();
              }
          });
      }
docs: Create a lab in a lab account.
  
  @param resourceGroupName The name of the resource group.
  @param labAccountName The name of the lab Account.
  @param createLabProperties Properties for creating a managed lab and a default environment setting
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceResponse} object if successful.