code: def merge_param(old_param, new_param, update_all):
      for key in new_param:
          if update_all or key not in old_param:
              old_param[key] = new_param[key]
      return old_param
  
imports: import torch
  import typing
  import torch.nn
  import torch.nn.functional
  from .None import register_nas_space
  from .base import BaseSpace, map_nn
  from ...model import BaseAutoModel
  from .operation import act_map
  from ..utils import count_parameters, measure_latency
  from ..backend import *
  from operator import *
  from .operation import *
label_desc: Use image node_id 6 for calling the GraphNet obj's underlying member method code with example usage: obj.merge_param(old_param, new_param, update_all) and returns: old_param