Clarification Needed on `HttpApiBuilder.middlewareSecurity` Existence

Am I correct in understanding that

HttpApiBuilder.middlewareSecurity

HttpApiBuilder.middlewareSecurity

does not in fact exist anywhere/anymore? It's mentioned on line 97 and 11 of

packages/effect/src/unstable/httpapi/HttpApiSecurity.ts

packages/effect/src/unstable/httpapi/HttpApiSecurity.ts

of @effect/platform & smol. It seems to me like that's what

HttpApiMiddlewareSecurity

HttpApiMiddlewareSecurity

was once referred to as? I'm not sure, just dropping this message off as I keep developing.