Reads rows from the table in the format prescribed by the read session.
        Each response contains one or more table rows, up to a maximum of 10 MiB
        per response; read requests which attempt to read individual rows larger
        than this will fail.

        Each request also returns a set of stream statistics reflecting the
        estimated total number of rows in the read stream. This number is computed
        based on the total table size and the number of active streams in the read
        session, and may change as other streams continue to read data.

        Example:
            >>> from google.cloud import bigquery_storage_v1beta1
            >>>
            >>> client = bigquery_storage_v1beta1.BigQueryStorageClient()
            >>>
            >>> # TODO: Initialize `read_position`:
            >>> read_position = {}
            >>>
            >>> for element in client.read_rows(read_position):
            ...     # process element
            ...     pass

        Args:
            read_position (Union[dict, ~google.cloud.bigquery_storage_v1beta1.types.StreamPosition]): Required. Identifier of the position in the stream to start reading from.
                The offset requested must be less than the last row read from ReadRows.
                Requesting a larger offset is undefined.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.bigquery_storage_v1beta1.types.StreamPosition`
            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:
            Iterable[~google.cloud.bigquery_storage_v1beta1.types.ReadRowsResponse].

        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 read_rows(
        self,
        read_position,
        retry=google.api_core.gapic_v1.method.DEFAULT,
        timeout=google.api_core.gapic_v1.method.DEFAULT,
        metadata=None,
    ):
        """
        Reads rows from the table in the format prescribed by the read session.
        Each response contains one or more table rows, up to a maximum of 10 MiB
        per response; read requests which attempt to read individual rows larger
        than this will fail.

        Each request also returns a set of stream statistics reflecting the
        estimated total number of rows in the read stream. This number is computed
        based on the total table size and the number of active streams in the read
        session, and may change as other streams continue to read data.

        Example:
            >>> from google.cloud import bigquery_storage_v1beta1
            >>>
            >>> client = bigquery_storage_v1beta1.BigQueryStorageClient()
            >>>
            >>> # TODO: Initialize `read_position`:
            >>> read_position = {}
            >>>
            >>> for element in client.read_rows(read_position):
            ...     # process element
            ...     pass

        Args:
            read_position (Union[dict, ~google.cloud.bigquery_storage_v1beta1.types.StreamPosition]): Required. Identifier of the position in the stream to start reading from.
                The offset requested must be less than the last row read from ReadRows.
                Requesting a larger offset is undefined.

                If a dict is provided, it must be of the same form as the protobuf
                message :class:`~google.cloud.bigquery_storage_v1beta1.types.StreamPosition`
            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:
            Iterable[~google.cloud.bigquery_storage_v1beta1.types.ReadRowsResponse].

        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 "read_rows" not in self._inner_api_calls:
            self._inner_api_calls[
                "read_rows"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.read_rows,
                default_retry=self._method_configs["ReadRows"].retry,
                default_timeout=self._method_configs["ReadRows"].timeout,
                client_info=self._client_info,
            )

        request = storage_pb2.ReadRowsRequest(read_position=read_position)
        if metadata is None:
            metadata = []
        metadata = list(metadata)
        try:
            routing_header = [("read_position.stream.name", read_position.stream.name)]
        except AttributeError:
            pass
        else:
            routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(  # pragma: no cover
                routing_header
            )
            metadata.append(routing_metadata)  # pragma: no cover

        return self._inner_api_calls["read_rows"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )