code: def score(self, *args, **kwargs):
      return self._fn()
  
file_path: dask-ml/dask_ml/_utils.py
imports: import time
  import dask.array
  import numpy
  from sklearn.base import BaseEstimator
label_desc: Use image node_id 4 for calling the ConstantFunction obj's underlying member method code with example usage: obj.score() and returns: self