code: def nnx_trace(self):
      return self._nnx_trace
  
imports: import contextlib
  import dataclasses
  import threading
  import typing
  import jax
  import jax.core
  from jax.core import MainTrace
  from flax.experimental.nnx.nnx import reprlib
label_desc: Use image node_id 3 for calling the TraceState obj's underlying member method code with example usage: obj.nnx_trace() and returns: self