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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 register_list(self):
 """Returns a list of the indices for the CPU registers. The returned indices can be used to read the register content or grab the register name. Args: self (JLink):
 the ``JLink`` instance Returns: List of registers. """

        num_items = self.MAX_NUM_CPU_REGISTERS
        buf = (ctypes.c_uint32 * num_items)()
        num_regs = self._dll.JLINKARM_GetRegisterList(buf, num_items)
        return buf[:num_regs]