code: def _warn_no_dask_cudf(fn):
      @functools.wraps(fn)
      def wrapper(self):
          # try import
          try:
              # Import dask_cudf (if available) in case
              # this is being called within Dask Dataframe
              import dask_cudf  # noqa: F401
  
          except ImportError:
              warnings.warn(
                  f"Using dask to tokenize a {type(self)} object, "
                  "but `dask_cudf` is not installed. Please install "
                  "`dask_cudf` for proper dispatching."
              )
          return fn(self)
  
      return wrapper
  
imports: import decimal
  import functools
  import os
  import traceback
  import warnings
  from typing import FrozenSet, Set, Union
  import numpy
  import pandas
  import rmm
  import cudf
  import cudf.api.types
  from cudf.core import column
  from cudf.core.buffer import as_buffer
label_desc: Use image node_id 9 for calling a global function with example usage: _warn_no_dask_cudf(fn) and returns: wrapper, fn