code: def _copy_main_traces(x):
      if isinstance(x, core.MainTrace):
          return core.MainTrace(x.level, x.trace_type, **x.payload)
      else:
          return x
  
imports: from __future__ import annotations
  from functools import partial
  import operator
  from typing import Any, Callable, NamedTuple
  import weakref
  from jax._src import config
  from jax._src import core
  from jax._src import traceback_util
  from jax._src.tree_util import tree_map
  from jax._src.util import curry
label_desc: Use image node_id 10 for calling a global function with example usage: _copy_main_traces(x) and returns: core, x