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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def halt(self):
 """Halts the CPU Core. Args: self (JLink):
 the ``JLink`` instance Returns: ``True`` if halted, ``False`` otherwise. """

        res = int(self._dll.JLINKARM_Halt())
        if res == 0:
            time.sleep(1)
            return True
        return False