code: def STDC2(**kwargs):
      model = STDCNet(base=64, layers=[4, 5, 3], **kwargs)
      return model
  
imports: import math
  import paddle
  import paddle.nn
  from paddleseg.utils import utils
  from paddleseg.cvlibs import manager, param_init
  from paddleseg.models.layers.layer_libs import SyncBatchNorm
label_desc: Use image node_id 1 for calling a global function with example usage: STDC2() and returns: model