Macro impl_put

macro_rules! impl_put {
    ($name:ident, $put_json:ty, $get_json:ty, $url:expr) => { ... };
}

UI macro: implements a method to send a PUT request.

Given a name, this macro implements a put_name method that sends a PUT request to a url. The response of the PUT is then parsed as JSON, and the resulting Rust value is returned.

The patch method signature is async fn put_name(&self, json: &$request_json) -> Result<$get_json, RequestError>.

This macro is very similar to impl_patch. See its documentation for an example.