The scope hint to surface in a WWW-Authenticate challenge so clients know
which scopes to request (basic/authorization §Protected Resource Metadata
Discovery Requirements / §Scope Selection Strategy). Prefers the concrete
requiredScope; otherwise falls back to the space-joined scopesSupported.
Empty when the operator configured neither.
The scope hint to surface in a WWW-Authenticate challenge so clients know which scopes to request (basic/authorization §Protected Resource Metadata Discovery Requirements / §Scope Selection Strategy). Prefers the concrete requiredScope; otherwise falls back to the space-joined scopesSupported. Empty when the operator configured neither.