code: def test_SM_read_path(self):
      self.assertEqual(metrics.GetReadPath(), "")
      metrics.SetReadPath(saved_model_path="foo")
      self.assertEqual(metrics.GetReadPath(), "foo")
  
imports: import os
  from tensorflow.core.framework import summary_pb2
  from tensorflow.core.framework import versions_pb2
  from tensorflow.core.protobuf import fingerprint_pb2
  from tensorflow.python.eager import test
  from tensorflow.python.saved_model.pywrap_saved_model import metrics
label_desc: Use image node_id 14 for calling the MetricsTest obj's underlying member method code with example usage: obj.test_SM_read_path() without return types