code: def test_reshape_with_dynamic_batch_size(self):
      input_layer = layers.Input(shape=(2, 4))
      reshaped = layers.Reshape((8,))(input_layer)
      self.assertEqual(reshaped.shape, (None, 8))
  
file_path: keras/keras/layers/reshaping/reshape_test.py
imports: import pytest
  from absl.testing import parameterized
  from keras import backend
  from keras import layers
  from keras import testing
  from keras.backend.common.keras_tensor import KerasTensor
label_desc: Use image node_id 2 for calling the ReshapeTest obj's underlying member method code with example usage: obj.test_reshape_with_dynamic_batch_size() without return types