code: def test_as_pickle(self):
      # given
      obj = {"a": [b"xyz", 34], "b": 1246}
  
      # when
      file = File.as_pickle(obj)
  
      # then
      self.assertEqual(file.extension, "pkl")
      self.assertEqual(file.content, pickle.dumps(obj))
  
imports: import pickle
  import unittest
  from io import BytesIO, StringIO
  import numpy
  from bokeh.plotting import figure
  from PIL import Image
  from neptune.exceptions import NeptuneException, StreamAlreadyUsedException
  from neptune.internal.types.file_types import FileType, InMemoryComposite
  from neptune.internal.utils.images import _get_pil_image_data
  from neptune.types import File
  from tests.e2e.utils import tmp_context
label_desc: Use image node_id 14 for calling the TestFile obj's underlying member method code with example usage: obj.test_as_pickle() without return types