code: def test_manhattan():
      ht = hl.balding_nichols_model(
          1, n_variants=100, n_samples=1
      ).rows()
      ht = ht.add_index("idx")
      hl.plot.manhattan(ht.idx / 100)
  
file_path: hail/hail/python/test/hail/plot/test_plot.py
imports: import pytest
  from unittest.mock import patch
  import hail
label_desc: Use image node_id 11 for calling a global function with example usage: test_manhattan() without return types