code: public Observable<Page<ComputeNode>> listAsync(final String poolId, final ComputeNodeListOptions computeNodeListOptions) {
          return listWithServiceResponseAsync(poolId, computeNodeListOptions)
                  .map(new Func1<ServiceResponseWithHeaders<Page<ComputeNode>, ComputeNodeListHeaders>, Page<ComputeNode>>() {
                      @Override
                      public Page<ComputeNode> call(ServiceResponseWithHeaders<Page<ComputeNode>, ComputeNodeListHeaders> response) {
                          return response.body();
                      }
                  });
      }
docs: Lists the compute nodes in the specified pool.
  
  @param poolId The ID of the pool from which you want to list nodes.
  @param computeNodeListOptions Additional parameters for the operation
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;ComputeNode&gt; object