code: def _is_prefix(a: Path, b: Path) -> bool:
      """Returns whether `a` is a prefix of `b`."""
      return b[: len(a)] == a
  
imports: import dataclasses
  from typing import Any, Optional, Tuple, Union
  from acme import types
  from acme.utils import tree_utils
  import chex
  import jax
  import jax.numpy
  import numpy
  import tree
label_desc: Use image node_id 1 for calling a global function with example usage: _is_prefix(a, b) and returns: unknown