code: def set_default_configs(self):
      self.config = {
          "input": "[-1]",
          "big-dim": -1,
          "small-dim": -1,
          "l2-regularize": 0.0,
          "max-change": 0.75,
          "self-repair-scale": 1.0e-05,
      }
  
imports: from __future__ import print_function
  import math
  import re
  import sys
  from libs.nnet3.xconfig.basic_layers import XconfigLayerBase
label_desc: Use image node_id 2 for calling the XconfigPrefinalLayer obj's underlying member method code with example usage: obj.set_default_configs() without return types