code: public Observable<Void> enableSchedulingAsync(String poolId, String nodeId) {
          return enableSchedulingWithServiceResponseAsync(poolId, nodeId).map(new Func1<ServiceResponseWithHeaders<Void, ComputeNodeEnableSchedulingHeaders>, Void>() {
              @Override
              public Void call(ServiceResponseWithHeaders<Void, ComputeNodeEnableSchedulingHeaders> response) {
                  return response.body();
              }
          });
      }
docs: Enables task scheduling on the specified compute node.
  You can enable task scheduling on a node only if its current scheduling state is disabled.
  
  @param poolId The ID of the pool that contains the compute node.
  @param nodeId The ID of the compute node on which you want to enable task scheduling.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceResponseWithHeaders} object if successful.