code: def close(self):
      if self.saver is not None:
          self.save()
      if self.summarizer is not None:
          self.summarizer.close()
      delattr(Module, "_MODULE_STACK")
      delattr(Layer, "_REGISTERED_LAYERS")
  
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 6 for calling the Model obj's underlying member method code with example usage: obj.close() without return types