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