code: def test_fallback(self):
      rngs = nnx.Rngs(0)
      key = rngs.dropout()
  
imports: from typing import Any
  import jax
  import jax.numpy
  import pytest
  from flax.experimental import nnx
  from flax.experimental.nnx.nnx.rnglib import _stable_hash
label_desc: Use image node_id 3 for calling the TestRngs obj's underlying member method code with example usage: obj.test_fallback() without return types