code: def __call__(self, data):
      if data:
          data[0] = data[0] + np.pi
      else:
          data.append(1)
      return data
  
file_path: MONAI/tests/test_lmdbdataset.py
imports: from __future__ import annotations
  import os
  import tempfile
  import unittest
  import nibabel
  import numpy
  from parameterized import parameterized
  from monai.data import LMDBDataset, json_hashing
  from monai.transforms import Compose, LoadImaged, SimulateDelayd, Transform
  from tests.utils import skip_if_windows
label_desc: Use image node_id 1 for calling the _InplaceXform obj's underlying member method code with example usage: obj.__call__(data) and returns: data