Additional configuration settings such as http
authentication (authenticate), additional headers
(add_headers), cookies (
...
Further named parameters, such as query, path, etc,
passed on to modify_url. Unnamed parameters will be combined
with config.
handle
The handle to use with this request. If not
supplied, will be retrieved and reused from the handle_pool
based on the scheme, hostname and port of the url. By default httr
requests to th