code: def setUp(self):
      super(PrunePreserveQuantizeRegistryTest, self).setUp()
      self.prune_preserve_quantize_registry = (
          prune_preserve_quantize_registry.PrunePreserveQuantizeRegistry()
      )
      # initial and build a CONV2D layer
      self.layer_conv2d = layers.Conv2D(10, (2, 2))
      self.layer_conv2d.build(2)
      # initial and build a CUSTOM layer
      self.layer_custom = self.CustomLayer()
      self.layer_custom.build()
  
file_path: model-optimization/tensorflow_model_optimization/python/core/quantization/keras/collab_opts/prune_preserve/prune_preserve_quantize_registry_test.py
imports: import tensorflow
  from tensorflow_model_optimization.python.core.quantization.keras import quantize_config
  from tensorflow_model_optimization.python.core.quantization.keras.collab_opts.prune_preserve import prune_preserve_quantize_registry
  from tensorflow_model_optimization.python.core.quantization.keras.default_8bit import default_8bit_quantize_registry
  from tensorflow_model_optimization.python.core.sparsity.keras import prune_registry
label_desc: Use image node_id 1 for calling the PrunePreserveQuantizeRegistryTest obj's underlying member method code with example usage: obj.setUp() without return types