upstreamCatalogIds
Upstream's spellings of the basic catalog -- the two URLs, and the bare basic the middleware falls back to when no context named one -- become the v1.0 basic catalog's id; any other id is returned as it came.
Upstream's spellings of the basic catalog -- the two URLs, and the bare basic the middleware falls back to when no context named one -- become the v1.0 basic catalog's id; any other id is returned as it came.