code: def __hash__(self):
      raise ValueError("Not hashable")
  
imports: from absl.testing import parameterized
  import numpy
  from sonnet.src import initializers
  from sonnet.src import test_utils
  from sonnet.src import utils
  import tensorflow
label_desc: Use image node_id 1 for calling the NotHashable obj's underlying member method code with example usage: obj.__hash__() without return types