code: public Observable<ServiceResponse<AssetContainerSasInner>> listContainerSasWithServiceResponseAsync(String resourceGroupName, String accountName, String assetName, ListContainerSasInput parameters) {
          if (this.client.subscriptionId() == null) {
              throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
          }
          if (resourceGroupName == null) {
              throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
          }
          if (accountName == null) {
              throw new IllegalArgumentException("Parameter accountName is required and cannot be null.");
          }
          if (assetName == null) {
              throw new IllegalArgumentException("Parameter assetName is required and cannot be null.");
          }
          if (parameters == null) {
              throw new IllegalArgumentException("Parameter parameters is required and cannot be null.");
          }
          if (this.client.apiVersion() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
          }
          Validator.validate(parameters);
          return service.listContainerSas(this.client.subscriptionId(), resourceGroupName, accountName, assetName, parameters, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<AssetContainerSasInner>>>() {
                  @Override
                  public Observable<ServiceResponse<AssetContainerSasInner>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<AssetContainerSasInner> clientResponse = listContainerSasDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: List the Asset URLs.
  Lists storage container URLs with shared access signatures (SAS) for uploading and downloading Asset content. The signatures are derived from the storage account keys.
  
  @param resourceGroupName The name of the resource group within the Azure subscription.
  @param accountName The Media Services account name.
  @param assetName The Asset name.
  @param parameters The request parameters
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the AssetContainerSasInner object