class_docstr: Used to check output of featureunions
class_docstr_tok: ["Used","to","check","output","of","featureunions"]
code: def score(self, X=None, y=None):
      return self.predict(X)[0]
  
imports: import os
  from ast import literal_eval
  import numpy
  from distributed import Lock, Variable, get_worker
  from sklearn.base import BaseEstimator, ClassifierMixin
  from sklearn.utils.validation import _num_samples, check_array
label_desc: Use image node_id 4 for calling the CheckXClassifier obj's underlying member method code with example usage: obj.score(X, y) and returns: self