code: public Observable<AssetContainerSasInner> listContainerSasAsync(String resourceGroupName, String accountName, String assetName, ListContainerSasInput parameters) {
          return listContainerSasWithServiceResponseAsync(resourceGroupName, accountName, assetName, parameters).map(new Func1<ServiceResponse<AssetContainerSasInner>, AssetContainerSasInner>() {
              @Override
              public AssetContainerSasInner call(ServiceResponse<AssetContainerSasInner> response) {
                  return response.body();
              }
          });
      }
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