code: def test_hash(self):
      x1 = self._tensor_time_series(77, 1234.5, b"\x12", "one", "two")
      x2 = self._tensor_time_series(77, 1234.5, b"\x12", "one", "two")
      x3 = self._tensor_time_series(66, 4321.0, b"\x7F", "hmm", "hum")
      self.assertEqual(hash(x1), hash(x2))
      # The next check is technically not required by the `__hash__`
      # contract, but _should_ pass; failure on this assertion would at
      # least warrant some scrutiny.
      self.assertNotEqual(hash(x1), hash(x3))
  
imports: import numpy
  from tensorboard import test
  from tensorboard.data import provider
label_desc: Use image node_id 4 for calling the TensorTimeSeriesTest obj's underlying member method code with example usage: obj.test_hash() without return types