def create_document(self,
                        parent,
                        document,
                        retry=google.api_core.gapic_v1.method.DEFAULT,
                        timeout=google.api_core.gapic_v1.method.DEFAULT,
                        metadata=None):
        """
        Creates a new document.

        Operation <response: ``Document``,
        metadata: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2beta1.KnowledgeOperationMetadata]>

        Example:
            >>> import dialogflow_v2beta1
            >>>
            >>> client = dialogflow_v2beta1.DocumentsClient()
            >>>
            >>> parent = client.knowledge_base_path('[PROJECT]', '[KNOWLEDGE_BASE]')
            >>>
            >>> # TODO: Initialize ``document``:
            >>> document = {}
            >>>
            >>> response = client.create_document(parent, document)
            >>>
            >>> def callback(operation_future):
            ...     # Handle result.
            ...     result = operation_future.result()
            >>>
            >>> response.add_done_callback(callback)
            >>>
            >>> # Handle metadata.
            >>> metadata = response.metadata()

        Args:
            parent (str): Required. The knoweldge base to create a document for.
                Format: ``projects/<Project ID>/knowledgeBases/<Knowledge Base ID>``.
            document (Union[dict, ~google.cloud.dialogflow_v2beta1.types.Document]): Required. The document to create.
                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.dialogflow_v2beta1.types.Document`
            retry (Optional[google.api_core.retry.Retry]):  A retry object used
                to retry requests. If ``None`` is specified, requests will not
                be retried.
            timeout (Optional[float]): The amount of time, in seconds, to wait
                for the request to complete. Note that if ``retry`` is
                specified, the timeout applies to each individual attempt.
            metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
                that is provided to the method.

        Returns:
            A :class:`~google.cloud.dialogflow_v2beta1.types._OperationFuture` instance.

        Raises:
            google.api_core.exceptions.GoogleAPICallError: If the request
                    failed for any reason.
            google.api_core.exceptions.RetryError: If the request failed due
                    to a retryable error and retry attempts failed.
            ValueError: If the parameters are invalid.
        """
        # Wrap the transport method to add retry and timeout logic.
        if 'create_document' not in self._inner_api_calls:
            self._inner_api_calls[
                'create_document'] = google.api_core.gapic_v1.method.wrap_method(
                    self.transport.create_document,
                    default_retry=self._method_configs['CreateDocument'].retry,
                    default_timeout=self._method_configs['CreateDocument']
                    .timeout,
                    client_info=self._client_info,
                )

        request = document_pb2.CreateDocumentRequest(
            parent=parent,
            document=document,
        )
        operation = self._inner_api_calls['create_document'](
            request, retry=retry, timeout=timeout, metadata=metadata)
        return google.api_core.operation.from_gapic(
            operation,
            self.transport._operations_client,
            document_pb2.Document,
            metadata_type=document_pb2.KnowledgeOperationMetadata,
        )
Creates a new document.

        Operation <response: ``Document``,
        metadata: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2beta1.KnowledgeOperationMetadata]>

        Example:
            >>> import dialogflow_v2beta1
            >>>
            >>> client = dialogflow_v2beta1.DocumentsClient()
            >>>
            >>> parent = client.knowledge_base_path('[PROJECT]', '[KNOWLEDGE_BASE]')
            >>>
            >>> # TODO: Initialize ``document``:
            >>> document = {}
            >>>
            >>> response = client.create_document(parent, document)
            >>>
            >>> def callback(operation_future):
            ...     # Handle result.
            ...     result = operation_future.result()
            >>>
            >>> response.add_done_callback(callback)
            >>>
            >>> # Handle metadata.
            >>> metadata = response.metadata()

        Args:
            parent (str): Required. The knoweldge base to create a document for.
                Format: ``projects/<Project ID>/knowledgeBases/<Knowledge Base ID>``.
            document (Union[dict, ~google.cloud.dialogflow_v2beta1.types.Document]): Required. The document to create.
                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.dialogflow_v2beta1.types.Document`
            retry (Optional[google.api_core.retry.Retry]):  A retry object used
                to retry requests. If ``None`` is specified, requests will not
                be retried.
            timeout (Optional[float]): The amount of time, in seconds, to wait
                for the request to complete. Note that if ``retry`` is
                specified, the timeout applies to each individual attempt.
            metadata (Optional[Sequence[Tuple[str, str]]]): Additional metadata
                that is provided to the method.

        Returns:
            A :class:`~google.cloud.dialogflow_v2beta1.types._OperationFuture` instance.

        Raises:
            google.api_core.exceptions.GoogleAPICallError: If the request
                    failed for any reason.
            google.api_core.exceptions.RetryError: If the request failed due
                    to a retryable error and retry attempts failed.
            ValueError: If the parameters are invalid.