Also, the OP article does explain well what could cause this misunderstanding. HTTP resource nouns shouldn't ever be "guessed". The resource either exist or it

Also, the OP article does explain well what could cause this misunderstanding. HTTP resource nouns shouldn't ever be "guessed". The resource either exist or it doesn't. And if it exists, it either has a data, or it doesn't. 404: it doesn't exist 204: it exists and has no data to parse.