code: def test_reshape_unknown_dim(self):
      self._core_reshape((2, 2, 2, 2), target_shape=[-1, 4])
  
file_path: tf-encrypted/tf_encrypted/keras/layers/reshape_test.py
imports: import unittest
  import numpy
  import pytest
  import tf_encrypted
  from tf_encrypted.keras.testing_utils import agreement_test
  from tf_encrypted.keras.testing_utils import layer_test
label_desc: Use image node_id 2 for calling the TestReshape obj's underlying member method code with example usage: obj.test_reshape_unknown_dim() without return types