Call GET, and return response content. This is the simplest case, when all you need is the response body and have no parameters.
Call GET, and return response content. args = stringstring fo query parameters.
Call GET, and return response content. args = QueryParam[] of parameters.
Call GET, and return response content. args = variadic args to supply parameter names and values.
Call post and return response content.
This is simplest interface to both http and ftp protocols. Request has methods get, post and exec which routed to proper concrete handler (http or ftp, etc). To enable some protocol-specific featutes you have to use protocol interface directly (see docs for HTTPRequest or FTPRequest)