In case the Member found by the where argument doesn't exist, create a new Member with this data.
Optionalomit?: MemberOmit<ExtArgs> | nullOmit specific fields from the Member
Optionalselect?: MemberSelect<ExtArgs> | nullSelect specific fields to fetch from the Member
In case the Member was found with the provided where argument, update it with this data.
The filter to search for the Member to update in case it exists.
Member upsert