code: def _repr_name(self):
      return "Rolling" if self.win_type is None else "Window"
  
imports: from collections import OrderedDict
  from ....serialization.serializables import AnyField, Int64Field, BoolField, StringField, Int32Field
  from ....utils import pd_release_version
  from ...core import DATAFRAME_TYPE
  from ...utils import build_empty_df, build_empty_series, validate_axis
  from ..core import Window
label_desc: Use image node_id 11 for calling the Rolling obj's underlying member method code with example usage: obj._repr_name() and returns: unknown