code: def map_list(layer: Model[InT, OutT]) -> Model[List[InT], List[OutT]]:
      """Create a model that maps a child layer across list inputs."""
      return Model("map_list", forward, layers=[layer], init=init)
  
imports: from typing import Callable, List, Optional, Tuple, TypeVar
  from ..model import Model
label_desc: Use image node_id 1 for calling a global function with example usage: map_list(layer) and returns: Model