code: def __init__(self, mapping: dict[Key, tp.Any]):
      if tp.TYPE_CHECKING:
          self._mapping = mapping
      else:
          object.__setattr__(self, "_mapping", mapping)
  
imports: from __future__ import annotations
  import typing
  import jax
  import jax.tree_util
  from flax import traverse_util
  from flax.experimental.nnx.nnx import filterlib, reprlib
  from flax.experimental.nnx.nnx.variables import Variable
label_desc: Use image node_id 1 to create a new StateVariablesMapping object from inherited base classes: tp.MutableMapping, reprlib with example: obj = StateVariablesMapping(mapping)