code: def test_is_monotonic_is_always_true(self):
      l0_scoring_function = (
          private_contribution_bounds.L0ScoringFunction(
              params=None, number_of_partitions=0, l0_histogram=None
          )
      )
  
      self.assertEqual(True, l0_scoring_function.is_monotonic)
  
file_path: pipelinedp/tests/private_contribution_bounds_test.py
imports: import unittest
  import pipeline_dp
  from pipeline_dp.dataset_histograms import histograms
  from pipeline_dp import private_contribution_bounds
label_desc: Use image node_id 1 for calling the L0ScoringFunctionTest obj's underlying member method code with example usage: obj.test_is_monotonic_is_always_true() without return types