code: def build_padding_layer(cfg, *args, **kwargs):
      """Build padding layer.
  
      Args:
          cfg (None or dict): The padding layer config, which should contain:
              - type (str): Layer type.
              - layer args: Args needed to instantiate a padding layer.
  
      Returns:
          nn.Module: Created padding layer.
      """
      if not isinstance(cfg, dict):
          raise TypeError("cfg must be a dict")
      if "type" not in cfg:
          raise KeyError('the cfg dict must contain the key "type"')
  
      cfg_ = cfg.copy()
      padding_type = cfg_.pop("type")
      if padding_type not in PADDING_LAYERS:
          raise KeyError(f"Unrecognized padding type {padding_type}.")
      else:
          padding_layer = PADDING_LAYERS.get(padding_type)
  
      layer = padding_layer(*args, **kwargs, **cfg_)
  
      return layer
  
label_desc: Use image node_id 1 for calling a global function with example usage: build_padding_layer(cfg) and returns: layer