code: def test_get_ratio_dropped_l0(self, l0_bound, expected):
      estimator = self._get_estimator(pipeline_dp.Metrics.COUNT)
      self.assertAlmostEqual(
          estimator.get_ratio_dropped_l0(l0_bound), expected
      )
  
file_path: pipelinedp/tests/dataset_histograms/histogram_error_estimator_test.py
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import pipeline_dp
  from pipeline_dp.dataset_histograms import histograms
  from pipeline_dp.dataset_histograms import computing_histograms
  from pipeline_dp.dataset_histograms import histogram_error_estimator
label_desc: Use image node_id 5 for calling the HistogramErrorEstimatorTest obj's underlying member method code with example usage: obj.test_get_ratio_dropped_l0(l0_bound, expected) without return types