code: def assert_packed_frame_serializable(df):
      packed = pack(df)
      header, frames = packed.serialize()
      loaded = unpack(packed.deserialize(header, frames))
      assert_eq(loaded, df)
  
imports: import pickle
  import sys
  import numpy
  import pandas
  from cudf import DataFrame, GenericIndex, Series
  from cudf._lib.copying import pack, unpack
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 21 for calling a global function with example usage: assert_packed_frame_serializable(df) without return types