code: def test_model_path_dbfs_from_keras(self):
      model_dir = "dbfs:/FileStore/shared_uploads/models"
      processed_model_dir = save_model_dir(model_dir)
      assert (
          processed_model_dir == "/dbfs/FileStore/shared_uploads/models"
      )
  
imports: import shutil
  from unittest import TestCase
  import tensorflow
  from bigdl.orca import OrcaContext
  from bigdl.orca.learn.trigger import SeveralIteration
  from bigdl.orca.learn.tf.estimator import Estimator
  from bigdl.dllib.nncontext import *
  from bigdl.orca.learn.utils import convert_predict_rdd_to_dataframe
  from bigdl.orca.learn.tf.estimator import save_model_dir
label_desc: Use image node_id 23 for calling the TestEstimatorForKeras obj's underlying member method code with example usage: obj.test_model_path_dbfs_from_keras() without return types