code: def set_default(args, d):
      for k, v in d.items():
          if k not in args:
              args[k] = v
      return args
  
imports: import logging
  import dgl
  import math
  import torch
  import torch.nn
  import torch.nn.functional
  import dgl.function
  from dgl.nn.functional import edge_softmax
  from dgl.nn.pytorch import GATConv
  from functools import partial
  from ..._utils import activation
  from ..None import register_model
  from .base import BaseHeteroModelMaintainer
  from .....utils import get_logger
label_desc: Use image node_id 1 for calling a global function with example usage: set_default(args, d) and returns: args