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