def METHOD_NAME(
    self,
    location_name,  # type: str
    operation_id,  # type: str
    **kwargs  # type: Any
):
    # type: (...) -> "models.OperationResult"
    """Get Async operation result.
    :param location_name: Location name.
    :type location_name: str
    :param operation_id: Operation Id.
    :type operation_id: str
    :keyword callable cls: A custom type or function that will be passed the direct response
    :return: OperationResult or the result of cls(response)
    :rtype: ~azure.mgmt.blockchain.models.OperationResult or None
    :raises: ~azure.core.exceptions.HttpResponseError
    """
    cls = kwargs.pop('cls', None)  # type: ClsType["models.OperationResult"]
    error_map = kwargs.pop('error_map', {404: ResourceNotFoundError, 409: ResourceExistsError})
    api_version = "2018-06-01-preview"
    # Construct URL
    url = self.METHOD_NAME.metadata['url']
    path_format_arguments = {
        'locationName': self._serialize.url("location_name", location_name, 'str'),
        'operationId': self._serialize.url("operation_id", operation_id, 'str'),
        'subscriptionId': self._serialize.url("self._config.subscription_id", self._config.subscription_id, 'str'),
    }
    url = self._client.format_url(url, **path_format_arguments)
    # Construct parameters
    query_parameters = {}  # type: Dict[str, Any]
    query_parameters['api-version'] = self._serialize.query("api_version", api_version, 'str')
    # Construct headers
    header_parameters = {}  # type: Dict[str, Any]
    header_parameters['Accept'] = 'application/json'
    # Construct and send request
    request = self._client.METHOD_NAME(url, query_parameters, header_parameters)
    pipeline_response = self._client._pipeline.run(request, stream=False, **kwargs)
    response = pipeline_response.http_response
    if response.status_code not in [200, 204]:
        map_error(status_code=response.status_code, response=response, error_map=error_map)
        raise HttpResponseError(response=response, error_format=ARMErrorFormat)
    deserialized = None
    if response.status_code == 200:
        deserialized = self._deserialize('OperationResult', pipeline_response)
    if cls:
      return cls(pipeline_response, deserialized, {})
    return deserialized