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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 get_processor_description(self, cpu_id):
 """Query the model string of a specified host CPU. in cpu_id of type int Identifier of the CPU. The current implementation might not necessarily return the description for this exact CPU. return description of type str Model string. An empty string is returned if value is not known or @a cpuId is invalid. """

        if not isinstance(cpu_id, baseinteger):
            raise TypeError("cpu_id can only be an instance of type baseinteger")
        description = self._call("getProcessorDescription",
                     in_p=[cpu_id])
        return description