def METHOD_NAME(self):
    """Test CaPPBuilder on real PDB file allowing non-standard amino acids."""
    ppb = CaPPBuilder()
    pp = ppb.build_peptides(self.structure, False)
    self.assertEqual(len(pp), 1)
    # Check the start and end positions
    self.assertEqual(pp[0][0].get_id()[1], 151)
    self.assertEqual(pp[0][-1].get_id()[1], 220)
    # Check the sequence
    s = pp[0].get_sequence()
    self.assertIsInstance(s, Seq)
    # Here non-standard MSE are shown as M
    self.assertEqual(
        "MDIRQGPKEPFRDYVDRFYKTLRAEQASQEVKNWMTETLLVQNANPDCKTILKALGPGATLEEMMTACQG", s
    )