code: def serialize(self, v: object) -> List[int]:
      return self._as_index_list(v)
  
imports: from dataclasses import dataclass
  from textwrap import dedent
  from typing import TYPE_CHECKING, Any, Callable, Generic, List, Optional, Sequence, Tuple, Union, cast
  from typing_extensions import TypeGuard
  from streamlit.elements.form import current_form_id
  from streamlit.elements.utils import check_callback_rules, check_session_state_rules, get_label_visibility_proto_value, maybe_coerce_enum, maybe_coerce_enum_sequence
  from streamlit.errors import StreamlitAPIException
  from streamlit.proto.Slider_pb2 import Slider
  from streamlit.runtime.metrics_util import gather_metrics
  from streamlit.runtime.scriptrunner import ScriptRunContext, get_script_run_ctx
  from streamlit.runtime.state import WidgetArgs, WidgetCallback, WidgetKwargs, register_widget
  from streamlit.runtime.state.common import RegisterWidgetResult, compute_widget_id
  from streamlit.type_util import Key, LabelVisibility, OptionSequence, T, check_python_comparable, ensure_indexable, maybe_raise_label_warnings, to_key
  from streamlit.util import index_
label_desc: Use image node_id 1 for calling the SelectSliderSerde obj's underlying member method code with example usage: obj.serialize(v) and returns: self