Fetches the HTTP web resource at the indicated location.
The first argument is a string indicating the URL domain; the remainder are the portions of the URL path within that domain. E.g., for the URL example.com/foo/bar, the arguments would be example.com, foo, and bar.
Since HTTP URLs are a valid expression in the Origami language, you won’t normally need to call this function. If you specify a URL like http://example.com in an expression, it invokes the @http function for you.