code: public Observable<ComputePolicyInner> updateAsync(String resourceGroupName, String accountName, String computePolicyName, UpdateComputePolicyParameters parameters) {
          return updateWithServiceResponseAsync(resourceGroupName, accountName, computePolicyName, parameters).map(new Func1<ServiceResponse<ComputePolicyInner>, ComputePolicyInner>() {
              @Override
              public ComputePolicyInner call(ServiceResponse<ComputePolicyInner> response) {
                  return response.body();
              }
          });
      }
docs: Updates the specified compute policy.
  
  @param resourceGroupName The name of the Azure resource group.
  @param accountName The name of the Data Lake Analytics account.
  @param computePolicyName The name of the compute policy to update.
  @param parameters Parameters supplied to update the compute policy.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ComputePolicyInner object