code: def __init__(self, **kwargs):
      for k, v in kwargs.items():
          setattr(self, k, v)
  
file_path: nilearn/nilearn/_utils/tests/test_masker_validation.py
imports: import nibabel
  import numpy
  import pytest
  from joblib import Memory
  from sklearn.base import BaseEstimator
  from nilearn._utils.masker_validation import check_embedded_masker
  from nilearn.experimental.surface import SurfaceMasker
  from nilearn.maskers import MultiNiftiMasker, NiftiMasker
label_desc: Use image node_id 1 to create a new DummyEstimator object  with example: obj = DummyEstimator()