class_docstr: Trackable class for captured constants.
class_docstr_tok: ["Trackable","class","for","captured","constants","."]
code: def _serialize_to_proto(self, object_proto=None, **kwargs):
      object_proto.constant.operation = self._exported_tensor.op.name
  
file_path: tensorflow/tensorflow/python/eager/polymorphic_function/saved_model_utils.py
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_util
  from tensorflow.python.saved_model import registration
  from tensorflow.python.trackable import base
label_desc: Use image node_id 3 for calling the TrackableConstant obj's underlying member method code with example usage: obj._serialize_to_proto(object_proto) without return types