code: public Observable<Page<ContainerServiceInner>> listNextAsync(final String nextPageLink) {
          return listNextWithServiceResponseAsync(nextPageLink)
              .map(new Func1<ServiceResponse<Page<ContainerServiceInner>>, Page<ContainerServiceInner>>() {
                  @Override
                  public Page<ContainerServiceInner> call(ServiceResponse<Page<ContainerServiceInner>> response) {
                      return response.body();
                  }
              });
      }
docs: Gets a list of container services in the specified subscription.
  Gets a list of container services in the specified subscription. The operation returns properties of each container service including state, orchestrator, number of masters and agents, and FQDNs of masters and agents.
  
  @param nextPageLink The NextLink from the previous successful call to List operation.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;ContainerServiceInner&gt; object