text: # -*- coding: utf-8 -*-
  #
  # Copyright 2018 Google LLC
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     https://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  """Accesses the google.datastore.v1 Datastore API."""
  
  import pkg_resources
  import warnings
  
  from google.oauth2 import service_account
  import google.api_core.gapic_v1.client_info
  import google.api_core.gapic_v1.config
  import google.api_core.gapic_v1.method
  import google.api_core.grpc_helpers
  import google.api_core.protobuf_helpers
  import grpc
  
  from google.cloud.datastore_v1.gapic import datastore_client_config
  from google.cloud.datastore_v1.gapic import enums
  from google.cloud.datastore_v1.gapic.transports import datastore_grpc_transport
  from google.cloud.datastore_v1.proto import datastore_pb2
  from google.cloud.datastore_v1.proto import datastore_pb2_grpc
  from google.cloud.datastore_v1.proto import entity_pb2
  from google.cloud.datastore_v1.proto import query_pb2
  
  _GAPIC_LIBRARY_VERSION = pkg_resources.get_distribution(
      'google-cloud-datastore', ).version
  
  
  class DatastoreClient(object):
      """
      Each RPC normalizes the partition IDs of the keys in its input entities,
      and always returns entities with keys with normalized partition IDs.
      This applies to all keys and entities, including those in values, except keys
      with both an empty path and an empty or unset partition ID. Normalization of
      input keys sets the project ID (if not already set) to the project ID from
      the request.
      """
  
      SERVICE_ADDRESS = 'datastore.googleapis.com:443'
      """The default address of the service."""
  
      # The name of the interface for this client. This is the key used to
      # find the method configuration in the client_config dictionary.
      _INTERFACE_NAME = 'google.datastore.v1.Datastore'
  
      @classmethod
      def from_service_account_file(cls, filename, *args, **kwargs):
          """Creates an instance of this client using the provided credentials
          file.
  
          Args:
              filename (str): The path to the service account private key json
                  file.
              args: Additional arguments to pass to the constructor.
              kwargs: Additional arguments to pass to the constructor.
  
          Returns:
              DatastoreClient: The constructed client.
          """
          credentials = service_account.Credentials.from_service_account_file(
              filename)
          kwargs['credentials'] = credentials
          return cls(*args, **kwargs)
  
      from_service_account_json = from_service_account_file
  
      def __init__(self,
                   transport=None,
                   channel=None,
                   credentials=None,
                   client_config=datastore_client_config.config,
                   client_info=None):
          """Constructor.
  
          Args:
              transport (Union[~.DatastoreGrpcTransport,
                      Callable[[~.Credentials, type], ~.DatastoreGrpcTransport]): A transport
                  instance, responsible for actually making the API calls.
                  The default transport uses the gRPC protocol.
                  This argument may also be a callable which returns a
                  transport instance. Callables will be sent the credentials
                  as the first argument and the default transport class as
                  the second argument.
              channel (grpc.Channel): DEPRECATED. A ``Channel`` instance
                  through which to make calls. This argument is mutually exclusive
                  with ``credentials``; providing both will raise an exception.
              credentials (google.auth.credentials.Credentials): The
                  authorization credentials to attach to requests. These
                  credentials identify this application to the service. If none
                  are specified, the client will attempt to ascertain the
                  credentials from the environment.
                  This argument is mutually exclusive with providing a
                  transport instance to ``transport``; doing so will raise
                  an exception.
              client_config (dict): DEPRECATED. A dictionary of call options for
                  each method. If not specified, the default configuration is used.
              client_info (google.api_core.gapic_v1.client_info.ClientInfo):
                  The client info used to send a user-agent string along with
                  API requests. If ``None``, then default info will be used.
                  Generally, you only need to set this if you're developing
                  your own client library.
          """
          # Raise deprecation warnings for things we want to go away.
          if client_config:
              warnings.warn('The `client_config` argument is deprecated.',
                            PendingDeprecationWarning)
          if channel:
              warnings.warn(
                  'The `channel` argument is deprecated; use '
                  '`transport` instead.', PendingDeprecationWarning)
  
          # Instantiate the transport.
          # The transport is responsible for handling serialization and
          # deserialization and actually sending data to the service.
          if transport:
              if callable(transport):
                  self.transport = transport(
                      credentials=credentials,
                      default_class=datastore_grpc_transport.
                      DatastoreGrpcTransport,
                  )
              else:
                  if credentials:
                      raise ValueError(
                          'Received both a transport instance and '
                          'credentials; these are mutually exclusive.')
                  self.transport = transport
          else:
              self.transport = datastore_grpc_transport.DatastoreGrpcTransport(
                  address=self.SERVICE_ADDRESS,
                  channel=channel,
                  credentials=credentials,
              )
  
          if client_info is None:
              client_info = (
                  google.api_core.gapic_v1.client_info.DEFAULT_CLIENT_INFO)
          client_info.gapic_version = _GAPIC_LIBRARY_VERSION
          self._client_info = client_info
  
          # Parse out the default settings for retry and timeout for each RPC
          # from the client configuration.
          # (Ordinarily, these are the defaults specified in the `*_config.py`
          # file next to this one.)
          self._method_configs = google.api_core.gapic_v1.config.parse_method_configs(
              client_config['interfaces'][self._INTERFACE_NAME], )
  
          # Save a dictionary of cached API call functions.
          # These are the actual callables which invoke the proper
          # transport methods, wrapped with `wrap_method` to add retry,
          # timeout, and the like.
          self._inner_api_calls = {}
  
      # Service calls
      def lookup(self,
                 project_id,
                 keys,
                 read_options=None,
                 retry=google.api_core.gapic_v1.method.DEFAULT,
                 timeout=google.api_core.gapic_v1.method.DEFAULT,
                 metadata=None):
          """
          Looks up entities by key.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``keys``:
              >>> keys = []
              >>>
              >>> response = client.lookup(project_id, keys)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              keys (list[Union[dict, ~google.cloud.datastore_v1.types.Key]]): Keys of entities to look up.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.Key`
              read_options (Union[dict, ~google.cloud.datastore_v1.types.ReadOptions]): The options for this lookup request.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.ReadOptions`
              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.datastore_v1.types.LookupResponse` 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 'lookup' not in self._inner_api_calls:
              self._inner_api_calls[
                  'lookup'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.lookup,
                      default_retry=self._method_configs['Lookup'].retry,
                      default_timeout=self._method_configs['Lookup'].timeout,
                      client_info=self._client_info,
                  )
  
          request = datastore_pb2.LookupRequest(
              project_id=project_id,
              keys=keys,
              read_options=read_options,
          )
          return self._inner_api_calls['lookup'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def run_query(self,
                    project_id,
                    partition_id,
                    read_options=None,
                    query=None,
                    gql_query=None,
                    retry=google.api_core.gapic_v1.method.DEFAULT,
                    timeout=google.api_core.gapic_v1.method.DEFAULT,
                    metadata=None):
          """
          Queries for entities.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``partition_id``:
              >>> partition_id = {}
              >>>
              >>> response = client.run_query(project_id, partition_id)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              partition_id (Union[dict, ~google.cloud.datastore_v1.types.PartitionId]): Entities are partitioned into subsets, identified by a partition ID.
                  Queries are scoped to a single partition.
                  This partition ID is normalized with the standard default context
                  partition ID.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.PartitionId`
              read_options (Union[dict, ~google.cloud.datastore_v1.types.ReadOptions]): The options for this query.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.ReadOptions`
              query (Union[dict, ~google.cloud.datastore_v1.types.Query]): The query to run.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.Query`
              gql_query (Union[dict, ~google.cloud.datastore_v1.types.GqlQuery]): The GQL query to run.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.GqlQuery`
              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.datastore_v1.types.RunQueryResponse` 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 'run_query' not in self._inner_api_calls:
              self._inner_api_calls[
                  'run_query'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.run_query,
                      default_retry=self._method_configs['RunQuery'].retry,
                      default_timeout=self._method_configs['RunQuery'].timeout,
                      client_info=self._client_info,
                  )
  
          # Sanity check: We have some fields which are mutually exclusive;
          # raise ValueError if more than one is sent.
          google.api_core.protobuf_helpers.check_oneof(
              query=query,
              gql_query=gql_query,
          )
  
          request = datastore_pb2.RunQueryRequest(
              project_id=project_id,
              partition_id=partition_id,
              read_options=read_options,
              query=query,
              gql_query=gql_query,
          )
          return self._inner_api_calls['run_query'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def begin_transaction(self,
                            project_id,
                            transaction_options=None,
                            retry=google.api_core.gapic_v1.method.DEFAULT,
                            timeout=google.api_core.gapic_v1.method.DEFAULT,
                            metadata=None):
          """
          Begins a new transaction.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> response = client.begin_transaction(project_id)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              transaction_options (Union[dict, ~google.cloud.datastore_v1.types.TransactionOptions]): Options for a new transaction.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.TransactionOptions`
              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.datastore_v1.types.BeginTransactionResponse` 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 'begin_transaction' not in self._inner_api_calls:
              self._inner_api_calls[
                  'begin_transaction'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.begin_transaction,
                      default_retry=self._method_configs['BeginTransaction'].
                      retry,
                      default_timeout=self._method_configs['BeginTransaction'].
                      timeout,
                      client_info=self._client_info,
                  )
  
          request = datastore_pb2.BeginTransactionRequest(
              project_id=project_id,
              transaction_options=transaction_options,
          )
          return self._inner_api_calls['begin_transaction'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def commit(self,
                 project_id,
                 mode,
                 mutations,
                 transaction=None,
                 retry=google.api_core.gapic_v1.method.DEFAULT,
                 timeout=google.api_core.gapic_v1.method.DEFAULT,
                 metadata=None):
          """
          Commits a transaction, optionally creating, deleting or modifying some
          entities.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>> from google.cloud.datastore_v1 import enums
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``mode``:
              >>> mode = enums.CommitRequest.Mode.MODE_UNSPECIFIED
              >>>
              >>> # TODO: Initialize ``mutations``:
              >>> mutations = []
              >>>
              >>> response = client.commit(project_id, mode, mutations)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              mode (~google.cloud.datastore_v1.types.Mode): The type of commit to perform. Defaults to ``TRANSACTIONAL``.
              mutations (list[Union[dict, ~google.cloud.datastore_v1.types.Mutation]]): The mutations to perform.
  
                  When mode is ``TRANSACTIONAL``, mutations affecting a single entity are
                  applied in order. The following sequences of mutations affecting a single
                  entity are not permitted in a single ``Commit`` request:
  
                  - ``insert`` followed by ``insert``
                  - ``update`` followed by ``insert``
                  - ``upsert`` followed by ``insert``
                  - ``delete`` followed by ``update``
  
                  When mode is ``NON_TRANSACTIONAL``, no two mutations may affect a single
                  entity.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.Mutation`
              transaction (bytes): The identifier of the transaction associated with the commit. A
                  transaction identifier is returned by a call to
                  ``Datastore.BeginTransaction``.
              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.datastore_v1.types.CommitResponse` 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 'commit' not in self._inner_api_calls:
              self._inner_api_calls[
                  'commit'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.commit,
                      default_retry=self._method_configs['Commit'].retry,
                      default_timeout=self._method_configs['Commit'].timeout,
                      client_info=self._client_info,
                  )
  
          # Sanity check: We have some fields which are mutually exclusive;
          # raise ValueError if more than one is sent.
          google.api_core.protobuf_helpers.check_oneof(transaction=transaction, )
  
          request = datastore_pb2.CommitRequest(
              project_id=project_id,
              mode=mode,
              mutations=mutations,
              transaction=transaction,
          )
          return self._inner_api_calls['commit'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def rollback(self,
                   project_id,
                   transaction,
                   retry=google.api_core.gapic_v1.method.DEFAULT,
                   timeout=google.api_core.gapic_v1.method.DEFAULT,
                   metadata=None):
          """
          Rolls back a transaction.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``transaction``:
              >>> transaction = b''
              >>>
              >>> response = client.rollback(project_id, transaction)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              transaction (bytes): The transaction identifier, returned by a call to
                  ``Datastore.BeginTransaction``.
              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.datastore_v1.types.RollbackResponse` 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 'rollback' not in self._inner_api_calls:
              self._inner_api_calls[
                  'rollback'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.rollback,
                      default_retry=self._method_configs['Rollback'].retry,
                      default_timeout=self._method_configs['Rollback'].timeout,
                      client_info=self._client_info,
                  )
  
          request = datastore_pb2.RollbackRequest(
              project_id=project_id,
              transaction=transaction,
          )
          return self._inner_api_calls['rollback'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def allocate_ids(self,
                       project_id,
                       keys,
                       retry=google.api_core.gapic_v1.method.DEFAULT,
                       timeout=google.api_core.gapic_v1.method.DEFAULT,
                       metadata=None):
          """
          Allocates IDs for the given keys, which is useful for referencing an entity
          before it is inserted.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``keys``:
              >>> keys = []
              >>>
              >>> response = client.allocate_ids(project_id, keys)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              keys (list[Union[dict, ~google.cloud.datastore_v1.types.Key]]): A list of keys with incomplete key paths for which to allocate IDs.
                  No key may be reserved/read-only.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.Key`
              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.datastore_v1.types.AllocateIdsResponse` 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 'allocate_ids' not in self._inner_api_calls:
              self._inner_api_calls[
                  'allocate_ids'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.allocate_ids,
                      default_retry=self._method_configs['AllocateIds'].retry,
                      default_timeout=self._method_configs['AllocateIds'].
                      timeout,
                      client_info=self._client_info,
                  )
  
          request = datastore_pb2.AllocateIdsRequest(
              project_id=project_id,
              keys=keys,
          )
          return self._inner_api_calls['allocate_ids'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  
      def reserve_ids(self,
                      project_id,
                      keys,
                      database_id=None,
                      retry=google.api_core.gapic_v1.method.DEFAULT,
                      timeout=google.api_core.gapic_v1.method.DEFAULT,
                      metadata=None):
          """
          Prevents the supplied keys' IDs from being auto-allocated by Cloud
          Datastore.
  
          Example:
              >>> from google.cloud import datastore_v1
              >>>
              >>> client = datastore_v1.DatastoreClient()
              >>>
              >>> # TODO: Initialize ``project_id``:
              >>> project_id = ''
              >>>
              >>> # TODO: Initialize ``keys``:
              >>> keys = []
              >>>
              >>> response = client.reserve_ids(project_id, keys)
  
          Args:
              project_id (str): The ID of the project against which to make the request.
              keys (list[Union[dict, ~google.cloud.datastore_v1.types.Key]]): A list of keys with complete key paths whose numeric IDs should not be
                  auto-allocated.
                  If a dict is provided, it must be of the same form as the protobuf
                  message :class:`~google.cloud.datastore_v1.types.Key`
              database_id (str): If not empty, the ID of the database against which to make the request.
              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.datastore_v1.types.ReserveIdsResponse` 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 'reserve_ids' not in self._inner_api_calls:
              self._inner_api_calls[
                  'reserve_ids'] = google.api_core.gapic_v1.method.wrap_method(
                      self.transport.reserve_ids,
                      default_retry=self._method_configs['ReserveIds'].retry,
                      default_timeout=self._method_configs['ReserveIds'].timeout,
                      client_info=self._client_info,
                  )
  
          request = datastore_pb2.ReserveIdsRequest(
              project_id=project_id,
              keys=keys,
              database_id=database_id,
          )
          return self._inner_api_calls['reserve_ids'](
              request, retry=retry, timeout=timeout, metadata=metadata)
  