code: def __instancecheck__(cls, instance):
      return isinstance(
          instance, (cls.__base__,) + getattr(cls, "_allow_data_type_")
      )
  
imports: import pandas
  from pandas.core.dtypes.common import pandas_dtype
  from ..core import ENTITY_TYPE
  from ..serialization.serializables import SerializableMeta
  from ..tensor import tensor, stack
  from ..tensor.array_utils import is_cupy
  from ..tensor.core import TENSOR_TYPE
  from ..utils import ceildiv, lazy_import
  from .core import DATAFRAME_TYPE, SERIES_TYPE, INDEX_TYPE, DataFrame, Series, Index
  from .datasource.dataframe import from_pandas
  from .datasource.series import from_pandas
  from .datasource.index import from_pandas, from_tileable
  from .datasource.from_tensor import dataframe_from_tensor, series_from_tensor, dataframe_from_1d_tileables
  from .utils import is_index, is_cudf
label_desc: Use image node_id 1 for calling the InitializerMeta obj's underlying member method code with example usage: obj.__instancecheck__(cls, instance) and returns: isinstance