code: public ServiceFuture<List<ComputeNode>> listAsync(final String poolId, final ListOperationCallback<ComputeNode> serviceCallback) {
          return AzureServiceFuture.fromHeaderPageResponse(
                  listSinglePageAsync(poolId),
                  new Func1<String, Observable<ServiceResponseWithHeaders<Page<ComputeNode>, ComputeNodeListHeaders>>>() {
                      @Override
                      public Observable<ServiceResponseWithHeaders<Page<ComputeNode>, ComputeNodeListHeaders>> call(String nextPageLink) {
                          return listNextSinglePageAsync(nextPageLink, null);
                      }
                  },
                  serviceCallback);
      }
docs: Lists the compute nodes in the specified pool.
  
  @param poolId The ID of the pool from which you want to list nodes.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object