PATCH(url = NULL, config = list(), body = NULL,
multipart = TRUE, ..., handle = NULL)authenticate),
additional headers (add_headers), cookies
(NULL for an empty body, a
length-one character or file. Each component should
either be a character value or the object returned by
fileUpload (if you want to upload a
file)TRUE), or
application/x-www-form-urlencoded (FALSE). Files
can not be uploaded when FALSE.query,
path, etc, passed on to modify_url.
These parameters must be named.handle_pool based on the scheme, hostname
and port of the url. By default