def exist(self, table: str, libref: str = "<STR_LIT>") -> bool:
return self._io.exist(table, libref)<EOL>
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