code: def compute_subgroup_auc(df, subgroup, label, model_name):
      subgroup_examples = df[df[subgroup]]
      return compute_auc(
          subgroup_examples[label], subgroup_examples[model_name]
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: compute_subgroup_auc(df, subgroup, label, model_name) and returns: compute_auc