code: def addTag(self, tag: str) -> None:
      self.client.add_tag(tag)
  
imports: from pyspark.sql.connect.utils import check_dependencies
  import threading
  import os
  import warnings
  from collections.abc import Sized
  from functools import reduce
  from threading import RLock
  from typing import Optional, Any, Union, Dict, List, Tuple, Set, cast, overload, Iterable, TYPE_CHECKING, ClassVar
  import numpy
  import pandas
  import pyarrow
  from pandas.api.types import is_datetime64_dtype, is_timedelta64_dtype
  import urllib
  from pyspark import SparkContext, SparkConf, __version__
  from pyspark.loose_version import LooseVersion
  from pyspark.sql.connect.client import SparkConnectClient, ChannelBuilder
  from pyspark.sql.connect.conf import RuntimeConf
  from pyspark.sql.connect.dataframe import DataFrame
  from pyspark.sql.connect.plan import SQL, Range, LocalRelation, LogicalPlan, CachedLocalRelation, CachedRelation, CachedRemoteRelation
  from pyspark.sql.connect.readwriter import DataFrameReader
  from pyspark.sql.connect.streaming.readwriter import DataStreamReader
  from pyspark.sql.connect.streaming.query import StreamingQueryManager
  from pyspark.sql.pandas.serializers import ArrowStreamPandasSerializer
  from pyspark.sql.pandas.types import to_arrow_schema, to_arrow_type, _deduplicate_field_names
  from pyspark.sql.session import classproperty, SparkSession
  from pyspark.sql.types import _infer_schema, _has_nulltype, _merge_type, Row, DataType, DayTimeIntervalType, StructType, AtomicType, TimestampType
  from pyspark.sql.utils import to_str
  from pyspark.errors import PySparkAttributeError, PySparkNotImplementedError, PySparkRuntimeError, PySparkValueError, PySparkTypeError
label_desc: Use image node_id 18 for calling the SparkSession obj's underlying member method code with example usage: obj.addTag(tag) without return types