code: def to_pickle(f):
      return f(
          "to_pickle",
          reason="For storage, we encourage you to use Delta or Parquet, instead of Python pickle "
          "format.",
      )
  
file_path: spark/python/pyspark/pandas/missing/common.py
label_desc: Use image node_id 3 for calling a global function with example usage: to_pickle(f) and returns: f