code: def valid(
      effective_kernel_size: int,
  ):  # pylint: disable=unused-argument
      """No padding."""
      return [0, 0]
  
imports: from typing import Callable, Sequence, Union
  from sonnet.src import utils
label_desc: Use image node_id 1 for calling a global function with example usage: valid(effective_kernel_size) and returns: list