code: def test_if_mlknn_classification_works_on_dense_input(self):
      for classifier in self.classifiers():
          self.assertClassifierWorksWithSparsity(classifier, "dense")
  
file_path: scikit-multilearn/skmultilearn/adapt/tests/test_mltsvm.py
imports: import unittest
  from skmultilearn.adapt import MLTSVM
  from skmultilearn.tests.classifier_basetest import ClassifierBaseTest
label_desc: Use image node_id 3 for calling the MLTSVMTest obj's underlying member method code with example usage: obj.test_if_mlknn_classification_works_on_dense_input() without return types