code: def test_manhattan_distance():
      sdm = SampleDistortionMetric(sd, sd_distorted)
      assert sdm.total_manhattan_distance() == 12
  
file_path: AIF360/tests/test_sample_distortion_metric.py
imports: import numpy
  import pandas
  from scipy.spatial.distance import cdist
  from aif360.datasets import StructuredDataset
  from aif360.metrics import SampleDistortionMetric
label_desc: Use image node_id 2 for calling a global function with example usage: test_manhattan_distance() without return types