Input for the createCategory mutation
The slug that the category will be an alias of
This is an ID that can be passed to a mutation by the client to track the progress of mutations and catch possible duplicate mutation submissions.
The description of the category object
The name of the category object to mutate
The ID of the category that should be set as the parent
If this argument exists then the slug will be checked to see if it is not an existing valid term. If that check succeeds (it is not a valid term), then it is added and the term id is given. If it fails, then a check is made to whether the taxonomy is hierarchical and the parent argument is not empty. If the second check succeeds, the term will be inserted and the term id will be given. If the slug argument is empty, then it will be calculated from the term name.