docs: public Observable<Page<StreamingPolicyInner>> listAsync(final String resourceGroupName, final String accountName) {
          return listWithServiceResponseAsync(resourceGroupName, accountName)
              .map(new Func1<ServiceResponse<Page<StreamingPolicyInner>>, Page<StreamingPolicyInner>>() {
                  @Override
                  public Page<StreamingPolicyInner> call(ServiceResponse<Page<StreamingPolicyInner>> response) {
                      return response.body();
                  }
              });
      }