class_docstr: Transforms features into isnull flags.
  
  Parameters
  ----------
  null_map : dict, default {'object': ''}
      Map which dictates the values to consider as NaN.
      Keys are the raw types of the features as in self.feature_metadata_in.type_map_raw.
      If a feature's raw type is not present in null_map, np.nan is treated as NaN.
      If a value other than np.nan is specified, np.nan is not considered NaN.
  **kwargs :
      Refer to :class:`AbstractFeatureGenerator` documentation for details on valid key word arguments.
code: def _more_tags(self):
      return {"feature_interactions": False}
  
file_path: autogluon/features/src/autogluon/features/generators/isnan.py
imports: import logging
  import numpy
  import pandas
  from pandas import DataFrame
  from autogluon.common.features.types import R_OBJECT, S_BOOL
  from .abstract import AbstractFeatureGenerator
label_desc: Use image node_id 6 for calling the IsNanFeatureGenerator obj's underlying member method code with example usage: obj._more_tags() and returns: dict