code: def _unique(self, inp):
      return inp.unique().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 3 for calling the OrdinalEncoderMG obj's underlying member method code with example usage: obj._unique(inp) and returns: inp