code: def setUp(self):
      super(ClusterPreserveIntegrationTest, self).setUp()
      self.cluster_params = {
          "number_of_clusters": 4,
          "cluster_centroids_init": cluster_config.CentroidInitialization.LINEAR,
      }
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_model_optimization.python.core.clustering.keras import cluster
  from tensorflow_model_optimization.python.core.clustering.keras import cluster_config
  from tensorflow_model_optimization.python.core.clustering.keras.experimental import cluster
  from tensorflow_model_optimization.python.core.quantization.keras import quantize
  from tensorflow_model_optimization.python.core.quantization.keras.collab_opts.cluster_preserve import default_8bit_cluster_preserve_quantize_scheme
  from tensorflow_model_optimization.python.core.quantization.keras.collab_opts.cluster_preserve.cluster_utils import strip_clustering_cqat
label_desc: Use image node_id 1 for calling the ClusterPreserveIntegrationTest obj's underlying member method code with example usage: obj.setUp() without return types