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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 objective(self, objective):
 """ Sets the objective of this ProjectPutRequest. Short project objective. :param objective: The objective of this ProjectPutRequest. :type: str """

        if objective is not None and len(objective) > 120:
            raise ValueError("Invalid value for `objective`, length must be less than or equal to `120`")
        if objective is not None and len(objective) < 0:
            raise ValueError("Invalid value for `objective`, length must be greater than or equal to `0`")

        self._objective = objective