code: def test_instancenorm_flat():
      # Check basic usage of instancenorm
      model = _create_and_fit_sequential_model(
          InstanceNormalization(), (64,)
      )
      assert hasattr(model.layers[0], "gamma")
      assert hasattr(model.layers[0], "beta")
  
imports: import pytest
  import numpy
  import tensorflow
  from tensorflow_addons.layers.normalizations import FilterResponseNormalization
  from tensorflow_addons.layers.normalizations import GroupNormalization
  from tensorflow_addons.layers.normalizations import InstanceNormalization
label_desc: Use image node_id 12 for calling a global function with example usage: test_instancenorm_flat() without return types