class_docstr: Adaptive Computation Time Function to help we use nn.scan on ACT.
code: def take_a_step(self, x) -> Any:
      return self.act_step(x)
  
imports: from typing import Any, Callable, Optional, Sequence, Tuple
  from absl import logging
  import flax.linen
  import jax
  import jax.numpy
  import ml_collections
  from scenic.model_lib.layers import nn_layers
label_desc: Use image node_id 4 for calling the ACTFunction obj's underlying member method code with example usage: obj.take_a_step(x) and returns: self