code: def sigmoid_activation() -> Model[FloatsXdT, FloatsXdT]:
      return Model("sigmoid_activation", forward)
  
imports: from typing import Callable, Tuple, TypeVar, cast
  from ..config import registry
  from ..model import Model
  from ..types import FloatsXdT
label_desc: Use image node_id 1 for calling a global function with example usage: sigmoid_activation() and returns: Model