def METHOD_NAME(self):
    """If CLOBBER does not exist in topobjdir, treat as empty."""
    c = Clobberer(self.get_topsrcdir(), self.get_tempdir())
    self.assertFalse(c.clobber_needed())
    required, performed, reason = c.maybe_do_clobber(os.getcwd(), True)
    self.assertFalse(required)
    self.assertFalse(performed)
    self.assertIsNone(reason)
    self.assertFalse(os.path.exists(os.path.join(c.topobjdir, "CLOBBER")))