In case the Client found by the where argument doesn't exist, create a new Client with this data.
Optionalinclude?: ClientInclude<ExtArgs> | nullChoose, which related nodes to fetch as well
Optionalomit?: ClientOmit<ExtArgs> | nullOmit specific fields from the Client
Optionalselect?: ClientSelect<ExtArgs> | nullSelect specific fields to fetch from the Client
In case the Client was found with the provided where argument, update it with this data.
The filter to search for the Client to update in case it exists.
Client upsert