code: def experimental_from_proto(cls, proto):
      return MyCustomClass(proto.index, proto.name)
  
imports: from tensorflow.core.function.trace_type import serialization
  from tensorflow.core.function.trace_type import serialization_test_pb2
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the MyCustomClass obj's underlying member method code with example usage: obj.experimental_from_proto(cls, proto) and returns: MyCustomClass