code: def _unpad(x: jnp.ndarray, shape: Sequence[int]) -> jnp.ndarray:
      if len(shape) == 2 and x.shape[-1] != shape[-1]:
          return x[..., : shape[-1]]
      return x
  
imports: import logging
  from typing import Any, Iterator, Optional, Tuple, Sequence
  from acme import specs
  from acme import types
  from flax import jax_utils
  import jax
  import jax.numpy
  import numpy
  import rlds
  import tensorflow
  import tensorflow_datasets
label_desc: Use image node_id 7 for calling a global function with example usage: _unpad(x, shape) and returns: x, x