code: def register_name(self, register_index):
          
          result = self._dll.JLINKARM_GetRegisterName(register_index)
          return ctypes.cast(result, ctypes.c_char_p).value.decode()
docs: Retrives and returns the name of an ARM CPU register.
  
          Args:
            self (JLink): the ``JLink`` instance
            register_index (int): index of the register whose name to retrieve
  
          Returns:
            Name of the register.