code: def core_observe(self, *, terminal, reward, parallel):
      return tf_util.constant(value=False, dtype="bool")
  
imports: from collections import OrderedDict
  import logging
  import os
  import time
  import h5py
  import numpy
  import tensorflow
  from tensorforce import TensorforceError
  from tensorforce.core import ArrayDict, Module, SignatureDict, TensorDict, TensorSpec, TensorsSpec, tf_function, tf_util, VariableDict
  from tensorforce.core.layers import Layer
label_desc: Use image node_id 20 for calling the Model obj's underlying member method code with example usage: obj.core_observe() and returns: tf_util