code: def __exit__(self):
      self.sess.close()
  
imports: import numpy
  import tensorflow.compat.v1
  from tensorflow.core.framework.tensor_pb2 import TensorProto
  from tensorflow.core.framework.tensor_shape_pb2 import TensorShapeProto
label_desc: Use image node_id 2 for calling the RefineGraph obj's underlying member method code with example usage: obj.__exit__() without return types