code: def construct_from_string(cls, string: str):
      if not isinstance(string, str):
          raise TypeError(
              f"'construct_from_string' expects a string, got {type(string)}"
          )
  
      if string == cls.__name__:
          return cls()
      else:
          raise TypeError(
              f"Cannot construct a '{cls.__name__}' from '{string}'"
          )
  
imports: from __future__ import annotations
  import datetime
  from typing import TYPE_CHECKING, Any, cast
  import numpy
  from pandas.core.dtypes.dtypes import register_extension_dtype
  from pandas.api.extensions import ExtensionArray, ExtensionDtype
  from pandas.api.types import pandas_dtype
label_desc: Use image node_id 3 for calling the DateDtype obj's underlying member method code with example usage: obj.construct_from_string(cls, string) and returns: cls