and a [python tracer](https://www.tensorflow.org/guide/profiler#events)
    which allows you to trace python function calls in your model. Usability
    improvements include better diagnostic messages and
    [profile options](https://tensorflow.org/guide/profiler#collect_performance_data)
    to customize the host and device trace verbosity level.

        version {
          producer: 1
          min_consumer: 1
        }
      }
    }
    nodes {
      children {
        node_id: 3
        local_name: "trace_0"
      }
      function {
        concrete_functions: "__inference_<lambda>_18"
        function_spec {
          fullargspec {
            named_tuple_value {
              name: "FullArgSpec"