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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def truncate(self, timeout=None):
 """Truncate the table For example: .. literalinclude:: snippets_table.py :start-after: [START bigtable_truncate_table] :end-before: [END bigtable_truncate_table] :type timeout: float :param timeout: (Optional) The amount of time, in seconds, to wait for the request to complete. :raise: 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. """

        client = self._instance._client
        table_admin_client = client.table_admin_client
        if timeout:
            table_admin_client.drop_row_range(
                self.name, delete_all_data_from_table=True, timeout=timeout
            )
        else:
            table_admin_client.drop_row_range(
                self.name, delete_all_data_from_table=True
            )