From a quick search, it seems like it is only used by oracle. Regardless, it isn't used in the examples given on the homepage, so it's confusing to have it required in the definition.
It looks like the TS definition has more problems than just this (mapped types aren't working properly in my use case). I'll close this for now, easy enough to add in when/if types get another look.
From a quick search, it seems like it is only used by oracle. Regardless, it isn't used in the examples given on the homepage, so it's confusing to have it required in the definition.