code: def test_value(self):
      shifter = ShiftIntensity(offset=1.0)
      result = shifter(self.imt)
      expected = self.imt + 1.0
      np.testing.assert_allclose(result, expected)
  
file_path: MONAI/tests/test_shift_intensity.py
imports: from __future__ import annotations
  import unittest
  import numpy
  from monai.transforms import ShiftIntensity
  from tests.utils import NumpyImageTestCase2D
label_desc: Use image node_id 1 for calling the TestShiftIntensity obj's underlying member method code with example usage: obj.test_value() without return types