title: AttributeError: 'MLPClassifier' object has no attribute 'decision_function'
body: <p>I do not know why I'm getting that error while I'm trying to use <code>decision_function()</code></p>
  
  <pre><code>model_1 = BaggingClassifier(base_estimator=MLPClassifier())
  model_1.fit(Xtrain, ytrain)
  model_1.decision_function(Xtrain)
  </code></pre>
  
  <p>I'm also getting that error using <code>DecisionTreeClassifier()</code></p>