code: def get_initial_params(key: jax.Array, model: nn.Module):
      input_dims = (
          1,
          84,
          84,
          4,
      )  # (minibatch, height, width, stacked frames)
      init_shape = jnp.ones(input_dims, jnp.float32)
      initial_params = model.init(key, init_shape)["params"]
      return initial_params
  
imports: import functools
  from typing import Any, Callable
  from absl import logging
  import flax
  from flax import linen
  import agent
  import models
  import test_episodes
  from flax.metrics import tensorboard
  from flax.training import checkpoints
  from flax.training import train_state
  import jax
  import jax.numpy
  import ml_collections
  import numpy
  import optax
label_desc: Use image node_id 6 for calling a global function with example usage: get_initial_params(key, model) and returns: initial_params