code: def deserialize(
      self,
      ui_value: Any,
      widget_id: str = "",
  ) -> DateWidgetReturn:
      return_value: Sequence[date] | None
      if ui_value is not None:
          return_value = tuple(
              datetime.strptime(v, "%Y/%m/%d").date() for v in ui_value
          )
      else:
          return_value = self.value.value
  
      if return_value is None or len(return_value) == 0:
          return () if self.value.is_range else None
  
      if not self.value.is_range:
          return return_value[0]
      return cast(DateWidgetReturn, tuple(return_value))
  
imports: from __future__ import annotations
  import re
  from dataclasses import dataclass
  from datetime import date, datetime, time, timedelta
  from textwrap import dedent
  from typing import TYPE_CHECKING, Any, List, Literal, Sequence, Tuple, Union, cast, overload
  from dateutil import relativedelta
  from typing_extensions import TypeAlias
  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
  from streamlit.errors import StreamlitAPIException
  from streamlit.proto.DateInput_pb2 import DateInput
  from streamlit.proto.TimeInput_pb2 import TimeInput
  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 compute_widget_id
  from streamlit.type_util import Key, LabelVisibility, maybe_raise_label_warnings, to_key
label_desc: Use image node_id 1 for calling the DateInputSerde obj's underlying member method code with example usage: obj.deserialize(ui_value, widget_id) and returns: cast, unknown, return_value