code: def __call__(self, x):
      return nn.Dense(15)(x)
  
imports: import functools
  from typing import Any
  from acme.agents.jax.mbop import ensemble
  from acme.jax import networks
  from flax import linen
  import jax
  import jax.numpy
  import numpy
  from absl.testing import absltest
label_desc: Use image node_id 1 for calling the RandomFFN obj's underlying member method code with example usage: obj.__call__(x) and returns: nn