def nature(self, nature):
        """
        Sets the nature of this YearlyFinancials.
        Nature of the balancesheet

        :param nature: The nature of this YearlyFinancials.
        :type: str
        """
        allowed_values = ["STANDALONE"]
        if nature not in allowed_values:
            raise ValueError(
                "Invalid value for `nature`, must be one of {0}"
                .format(allowed_values)
            )
        self._nature = nature