def add_hierarchical_entity(<EOL>self, app_id, version_id, children=None, name=None, custom_headers=None, raw=False, **operation_config):
hierarchical_model_create_object = models.HierarchicalEntityModel(children=children, name=name)<EOL>url = self.add_hierarchical_entity.metadata['<STR_LIT:url>']<EOL>path_format_arguments = {<EOL>'<STR_LIT>': self._serialize.url("<STR_LIT>", self.config.endpoint, '<STR_LIT:str>', skip_quote=True),<EOL>'<STR_LIT>': self._serialize.url("<STR_LIT>", app_id, '<STR_LIT:str>'),<EOL>'<STR_LIT>': self._serialize.url("<STR_LIT>", version_id, '<STR_LIT:str>')<EOL>}<EOL>url = self._client.format_url(url, **path_format_arguments)<EOL>query_parameters = {}<EOL>header_parameters = {}<EOL>header_parameters['<STR_LIT>'] = '<STR_LIT:application/json>'<EOL>header_parameters['<STR_LIT:Content-Type>'] = '<STR_LIT>'<EOL>if custom_headers:<EOL><INDENT>header_parameters.update(custom_headers)<EOL><DEDENT>body_content = self._serialize.body(hierarchical_model_create_object, '<STR_LIT>')<EOL>request = self._client.post(url, query_parameters, header_parameters, body_content)<EOL>response = self._client.send(request, stream=False, **operation_config)<EOL>if response.status_code not in [<NUM_LIT>]:<EOL><INDENT>raise models.ErrorResponseException(self._deserialize, response)<EOL><DEDENT>deserialized = None<EOL>if response.status_code == <NUM_LIT>:<EOL><INDENT>deserialized = self._deserialize('<STR_LIT:str>', response)<EOL><DEDENT>if raw:<EOL><INDENT>client_raw_response = ClientRawResponse(deserialized, response)<EOL>return client_raw_response<EOL><DEDENT>return deserialized<EOL>
Adds a hierarchical entity extractor to a version of the application.

        :param app_id: The application ID.
        :type app_id: str
        :param version_id: The version ID.
        :type version_id: str
        :param children: Child entities.
        :type children: list[str]
        :param name: Entity name.
        :type name: str
        :param dict custom_headers: headers that will be added to the request
        :param bool raw: returns the direct response alongside the
         deserialized response
        :param operation_config: :ref:`Operation configuration
         overrides<msrest:optionsforoperations>`.
        :return: str or ClientRawResponse if raw=true
        :rtype: str or ~msrest.pipeline.ClientRawResponse
        :raises:
         :class:`ErrorResponseException<azure.cognitiveservices.language.luis.authoring.models.ErrorResponseException>`