code: public Observable<ServiceResponse<Page<BuildArgumentInner>>> listBuildArgumentsWithServiceResponseAsync(final String resourceGroupName, final String registryName, final String buildTaskName, final String stepName) {
          return listBuildArgumentsSinglePageAsync(resourceGroupName, registryName, buildTaskName, stepName)
              .concatMap(new Func1<ServiceResponse<Page<BuildArgumentInner>>, Observable<ServiceResponse<Page<BuildArgumentInner>>>>() {
                  @Override
                  public Observable<ServiceResponse<Page<BuildArgumentInner>>> call(ServiceResponse<Page<BuildArgumentInner>> page) {
                      String nextPageLink = page.body().nextPageLink();
                      if (nextPageLink == null) {
                          return Observable.just(page);
                      }
                      return Observable.just(page).concatWith(listBuildArgumentsNextWithServiceResponseAsync(nextPageLink));
                  }
              });
      }
docs: List the build arguments for a step including the secret arguments.
  
  @param resourceGroupName The name of the resource group to which the container registry belongs.
  @param registryName The name of the container registry.
  @param buildTaskName The name of the container registry build task.
  @param stepName The name of a build step for a container registry build task.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;BuildArgumentInner&gt; object