def METHOD_NAME(self):
    prefix = ("0" * 5) + "."
    suffix = "." + ("0" * 10)
    existing = [prefix + str(i) + suffix for i in range(100)]
    e = list(existing)
    self.assertEqual(
        handleClash2(existing=e, prefix=prefix, suffix=suffix),
        "00000.100.0000000000",
    )
    e = list(existing)
    e.remove(prefix + "1" + suffix)
    self.assertEqual(
        handleClash2(existing=e, prefix=prefix, suffix=suffix), "00000.1.0000000000"
    )
    e = list(existing)
    e.remove(prefix + "2" + suffix)
    self.assertEqual(
        handleClash2(existing=e, prefix=prefix, suffix=suffix), "00000.2.0000000000"
    )