code: def get_problem_type(cls):
      return "regression"
  
imports: import abc
  from typing import Dict
  import numpy
  from sklearn.base import BaseEstimator
  from lightwood.analysis.nc.util import t_softmax
label_desc: Use image node_id 2 for calling the RegressorMixin obj's underlying member method code with example usage: obj.get_problem_type(cls) and returns: str