code: def init_weight(self):
      utils.load_pretrained_model(self, self.pretrained)
  
imports: import paddle.nn
  from paddleseg.utils import utils
  from paddleseg.models import layers
  from paddleseg.cvlibs import manager
label_desc: Use image node_id 5 for calling the ResNet obj's underlying member method code with example usage: obj.init_weight() without return types