def METHOD_NAME():
  '''
  Test if iselection for ligand PG5 (chain A resseq 201) is correct.
  '''
  pdb_fname = libtbx.env.find_in_repositories(
    relative_path="mmtbx/regression/pdbs/one_chain_ligand_water.pdb",
    test=os.path.isfile)
  pdb_inp = iotbx.pdb.input(pdb_fname)
  model = mmtbx.model.manager(model_input = pdb_inp, stop_for_unknowns=False)
  model.process(make_restraints=True)
  model.set_log(null_out())
  params = iotbx.phil.parse(
    input_string=master_params_str, process_includes=True).extract()
  # do not place H atoms for this test
  #params.validate_ligands.place_hydrogens = False
  vl_manager = validate_ligands.manager(
    model = model,
    fmodel = None,
    params = params.validate_ligands,
    log   = null_out())
  vl_manager.run()
  tst_get_ligands(vl_manager = vl_manager)
  tst_get_overlaps(vl_manager = vl_manager)