code: def _has_unknown(self, X_cat, encoder_cat):
      return not X_cat.isin(encoder_cat).all().compute()
  
file_path: cuml/python/cuml/preprocessing/ordinalencoder_mg.py
imports: import cupy
  import dask
  from cuml.dask.common.dask_arr_utils import to_dask_cudf
  from cuml.internals.safe_imports import gpu_only_import, gpu_only_import_from
  from cuml.preprocessing.encoders import OrdinalEncoder
label_desc: Use image node_id 4 for calling the OrdinalEncoderMG obj's underlying member method code with example usage: obj._has_unknown(X_cat, encoder_cat) and returns: unknown