Decides whether a request is refused to a realm administrator.
A service authority and an unauthenticated request are never refused here.
gateStateFor()'s answer for the request
gateStateFor()
the console path, realm prefix stripped
Optional
the parsed body of a write, or null for a read
the query string
null when nothing refuses, or { code, reason, detail }
{ code, reason, detail }
Decides whether a request is refused to a realm administrator.
A service authority and an unauthenticated request are never refused here.