code: def conf_int(self):
      return [
          (0.5399, 1.0465),
          (0.3565, 1.7389),
          (-0.4271, 0.1600),
          (-63.2381, -18.5517),
      ]
  
imports: import numpy
label_desc: Use image node_id 2 for calling the BisquareHuber obj's underlying member method code with example usage: obj.conf_int() and returns: list