code: def hlg_layer_topological(hlg: HighLevelGraph, i: int) -> Layer:
      "Get the layer from a HighLevelGraph at position ``i``, topologically"
      return hlg.layers[hlg._toposort_layers()[i]]
  
imports: from __future__ import annotations
  import contextlib
  import importlib
  import time
  from typing import TYPE_CHECKING
label_desc: Use image node_id 7 for calling a global function with example usage: hlg_layer_topological(hlg, i) and returns: hlg