Updates the metadata and configuration of a specific Redis instance.

        Completed longrunning.Operation will contain the new instance object
        in the response field. The returned operation is automatically deleted
        after a few hours, so there is no need to call DeleteOperation.

        Example:
            >>> from google.cloud import redis_v1beta1
            >>>
            >>> client = redis_v1beta1.CloudRedisClient()
            >>>
            >>> paths_element = 'display_name'
            >>> paths_element_2 = 'memory_size_gb'
            >>> paths = [paths_element, paths_element_2]
            >>> update_mask = {'paths': paths}
            >>> display_name = 'UpdatedDisplayName'
            >>> memory_size_gb = 4
            >>> instance = {'display_name': display_name, 'memory_size_gb': memory_size_gb}
            >>>
            >>> response = client.update_instance(update_mask, instance)
            >>>
            >>> def callback(operation_future):
            ...     # Handle result.
            ...     result = operation_future.result()
            >>>
            >>> response.add_done_callback(callback)
            >>>
            >>> # Handle metadata.
            >>> metadata = response.metadata()

        Args:
            update_mask (Union[dict, ~google.cloud.redis_v1beta1.types.FieldMask]): Required. Mask of fields to update. At least one path must be supplied
                in this field. The elements of the repeated paths field may only include
                these fields from ``Instance``: \* ``display_name`` \* ``labels`` \*
                ``memory_size_gb`` \* ``redis_config``

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.redis_v1beta1.types.FieldMask`
            instance (Union[dict, ~google.cloud.redis_v1beta1.types.Instance]): Required. Update description. Only fields specified in update\_mask are
                updated.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.redis_v1beta1.types.Instance`
            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.redis_v1beta1.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.

def update_instance(
        self,
        update_mask,
        instance,
        retry=google.api_core.gapic_v1.method.DEFAULT,
        timeout=google.api_core.gapic_v1.method.DEFAULT,
        metadata=None,
    ):
        """
        Updates the metadata and configuration of a specific Redis instance.

        Completed longrunning.Operation will contain the new instance object
        in the response field. The returned operation is automatically deleted
        after a few hours, so there is no need to call DeleteOperation.

        Example:
            >>> from google.cloud import redis_v1beta1
            >>>
            >>> client = redis_v1beta1.CloudRedisClient()
            >>>
            >>> paths_element = 'display_name'
            >>> paths_element_2 = 'memory_size_gb'
            >>> paths = [paths_element, paths_element_2]
            >>> update_mask = {'paths': paths}
            >>> display_name = 'UpdatedDisplayName'
            >>> memory_size_gb = 4
            >>> instance = {'display_name': display_name, 'memory_size_gb': memory_size_gb}
            >>>
            >>> response = client.update_instance(update_mask, instance)
            >>>
            >>> def callback(operation_future):
            ...     # Handle result.
            ...     result = operation_future.result()
            >>>
            >>> response.add_done_callback(callback)
            >>>
            >>> # Handle metadata.
            >>> metadata = response.metadata()

        Args:
            update_mask (Union[dict, ~google.cloud.redis_v1beta1.types.FieldMask]): Required. Mask of fields to update. At least one path must be supplied
                in this field. The elements of the repeated paths field may only include
                these fields from ``Instance``: \* ``display_name`` \* ``labels`` \*
                ``memory_size_gb`` \* ``redis_config``

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.redis_v1beta1.types.FieldMask`
            instance (Union[dict, ~google.cloud.redis_v1beta1.types.Instance]): Required. Update description. Only fields specified in update\_mask are
                updated.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.redis_v1beta1.types.Instance`
            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.redis_v1beta1.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 "update_instance" not in self._inner_api_calls:
            self._inner_api_calls[
                "update_instance"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.update_instance,
                default_retry=self._method_configs["UpdateInstance"].retry,
                default_timeout=self._method_configs["UpdateInstance"].timeout,
                client_info=self._client_info,
            )

        request = cloud_redis_pb2.UpdateInstanceRequest(
            update_mask=update_mask, instance=instance
        )
        operation = self._inner_api_calls["update_instance"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )
        return google.api_core.operation.from_gapic(
            operation,
            self.transport._operations_client,
            cloud_redis_pb2.Instance,
            metadata_type=any_pb2.Any,
        )