Does the SAS data set currently exist

        :param table: the name of the SAS Data Set
        :param libref: the libref for the Data Set, defaults to WORK, or USER if assigned
        :return: Boolean True it the Data Set exists and False if it does not
        :rtype: bool

def exist(self, table: str, libref: str = "") -> bool:
        """
        Does the SAS data set currently exist

        :param table: the name of the SAS Data Set
        :param libref: the libref for the Data Set, defaults to WORK, or USER if assigned
        :return: Boolean True it the Data Set exists and False if it does not
        :rtype: bool
        """
        return self._io.exist(table, libref)