code: public Observable<OperationResultInfoBaseResourceInner> getAsync(String vaultName, String resourceGroupName, String operationId) {
          return getWithServiceResponseAsync(vaultName, resourceGroupName, operationId).map(new Func1<ServiceResponse<OperationResultInfoBaseResourceInner>, OperationResultInfoBaseResourceInner>() {
              @Override
              public OperationResultInfoBaseResourceInner call(ServiceResponse<OperationResultInfoBaseResourceInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets the operation result of operation triggered by Export Jobs API. If the operation is successful, then it also contains URL of a Blob and a SAS key to access the same. The blob contains exported jobs in JSON serialized format.
  
  @param vaultName The name of the recovery services vault.
  @param resourceGroupName The name of the resource group where the recovery services vault is present.
  @param operationId OperationID which represents the export job.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OperationResultInfoBaseResourceInner object