code: def test_value(self):
      for p in TEST_NDARRAYS:
          imt = p(self.imt)
          factor = np.random.rand()
          offset = np.std(self.imt) * factor
          shifter = ShiftIntensity(offset=offset)
          expected = shifter(imt)
          std_shifter = StdShiftIntensity(factor=factor)
          result = std_shifter(imt)
          assert_allclose(
              result, expected, atol=0, rtol=1e-5, type_test=False
          )
  
file_path: MONAI/tests/test_std_shift_intensity.py
imports: from __future__ import annotations
  import unittest
  import numpy
  from monai.transforms import ShiftIntensity, StdShiftIntensity
  from monai.utils import dtype_numpy_to_torch
  from tests.utils import TEST_NDARRAYS, NumpyImageTestCase2D, assert_allclose
label_desc: Use image node_id 1 for calling the TestStdShiftIntensity obj's underlying member method code with example usage: obj.test_value() without return types